Week 1: The Cosmological Argument

Week 1: The Cosmological Argument – Why Is There Something Rather Than Nothing?

Main Teaching

Welcome to Foundations of Hope. Over the next twelve weeks, we will embark on a journey to equip ourselves to provide a reasoned defense for the hope we have in Christ. The Apostle Peter instructs us, "Always be prepared to make a defense to anyone who asks you for a reason for the hope that is in you; yet do it with gentleness and respect" (1 Peter 3:15, ESV). This discipline, known as apologetics, is not about winning arguments but about clearing the intellectual ground so that the truth of the Gospel can be clearly seen. We begin with the most fundamental question of all, a question that lies at the root of human curiosity and has been pondered by philosophers for millennia: "Why is there something rather than nothing?" This question leads us to our first major line of evidence for the existence of God: the Cosmological Argument. This is not a single argument but a family of arguments that reason from the existence of the cosmos—the universe and everything in it—to the existence of a transcendent Creator. These are a posteriori arguments, meaning they are not based on abstract definitions but on direct observations of the world around us: things exist, they change, and they have causes. We will explore the two most powerful and influential versions of this argument.

Part 1: The Kalam Cosmological Argument (The Argument from the Beginning)

The Kalam Cosmological Argument, named for the medieval Islamic scholasticism where it was highly developed, has been powerfully revived in our time by philosopher William Lane Craig. It argues from the beginning of the universe to a Beginner. It is elegantly simple, laid out in a three- step logical syllogism: 1. Premise 1: Whatever begins to exist has a cause. 2. Premise 2: The universe began to exist. 3. Conclusion: Therefore, the universe has a cause. If the two premises are true, the conclusion is logically inescapable.So, let's examine the strength of each premise.

Defense of Premise 1: "Whatever begins to exist has a cause. " This first premise seems almost self-evident. It is a foundational metaphysical principle, confirmed by all our experience. We intuitively know that things do not simply pop into being from nothing, uncaused. This principle is supported by three main reasons : • Rational Intuition: The ancient philosophical principle ex nihilo nihil fit—"out of nothing, nothing comes"—captures a basic intuition of reality. To claim something can come into being from nothing is worse than magic. At least with magic, you have a magician and a hat! To deny this premise is to believe that the entire universe could have just appeared at some point in the past for no reason whatsoever. • The Absurdity of the Alternative: If things could come into being from nothing, then it becomes inexplicable why just anything and everything isn't popping into existence all the time. Why don't we see horses, cars, or planets appearing uncaused in our living rooms? There is nothing about "nothing" that could constrain it, so we should expect a universe cluttered with things popping into being. Our consistent observation of a world governed by cause and effect is strong evidence against this alternative. • The Foundation of Science: Science itself is a search for causes. It is built on the principle of causality. To deny this premise is to undermine the very foundation of the scientific method, which operates by observing effects and seeking their natural causes. Defense of Premise 2: "The universe began to exist. " For centuries, this was a philosophical debate, but in the 20th century, modern science provided powerful corroborating evidence. There are two major lines of support for this premise: philosophical arguments and scientific confirmation. 1. Philosophical Arguments Against an Infinite Past: The idea of a past that goes back forever—an actual infinite number of past events—leads to logical absurdities. To understand why, we must distinguish between a potential infinite and an actual infinite.

• A potential infinite is a series that can always be added to but is never complete. For example, you can always divide a line segment in half again, but you will never reach a point where you have an actually infinite number of divisions. • An actual infinite is a completed, definite set containing an infinite number of members. The past, if it were infinite, would have to be an actual infinite—a completed series of past events. Philosophers have shown this is impossible. A famous illustration is Hilbert's Hotel, devised by German mathematician David Hilbert. Imagine a hotel with an infinite number of rooms, and all the rooms are full. If a new guest arrives, the manager can simply ask the guest in room 1 to move to room 2, the guest in room 2 to move to room 3, and so on to infinity. This frees up room 1 for the new guest. He could do this for an infinite number of new guests! Such scenarios are conceptually absurd and show that the existence of an actual infinite in the real world leads to contradictions. Since the past is a real series of events that has been completed to reach the present, it cannot be an actual infinite. Therefore, the past must be finite, and the universe must have had a beginning. 2. Scientific Confirmation of a Beginning: Modern cosmology and physics have provided stunning confirmation of a finite past. • The Expanding Universe: In the 1920s, Edwin Hubble discovered that galaxies are moving away from us, and the farther away they are, the faster they are moving. This "redshift" is evidence that the universe is expanding. If we rewind the cosmic clock, all the matter and energy in the universe would converge back to a single point of unimaginable density and temperature—an absolute beginning known as the Big Bang. • The Second Law of Thermodynamics: This law of physics states that in a closed system (like the universe), usable energy is constantly being lost and entropy (disorder) is increasing. The universe is like a giant clock that is slowly winding down. If the universe had existed forever, it would have already run out of all usable energy by now. It would be in a state of "heat death. " The fact that we still have usable energy means the universe must have been "wound up" at a finite point in the past. • Cosmic Microwave Background Radiation (CMBR): In 1965, scientists discovered a faint, uniform glow of radiation filling all of space. This is the residual heat, the "afterglow, " from

the initial Big Bang explosion. It is a literal echo of creation and powerful evidence that the universe began in an incredibly hot, dense state. Conclusion of the Kalam Argument Since both premises are more plausibly true than their opposites, the conclusion logically follows: The universe has a cause.

Part 2: The Leibnizian Cosmological Argument (The Argument from Contingency)

This second version of the argument, championed by the brilliant German philosopher and mathematician Gottfried Leibniz, does not depend on the universe having a beginning in time. It focuses on why the universe exists right now. It is based on his famous Principle of Sufficient Reason (PSR), which states that everything that exists has an explanation for its existence, either in the necessity of its own nature or in an external cause. To understand this, we must distinguish between two types of things : • Contingent things: These are things that exist, but could have failed to exist. Their existence depends on something else. You, the chair you're sitting on, the planet Earth—all are contingent. • Necessary things: These are things that exist by their own nature and cannot fail to exist. Their non-existence is a logical impossibility. Many philosophers believe numbers or mathematical truths exist in this way. The argument proceeds as follows: 1. Everything we observe in the universe—from a quark to a galaxy—is contingent. 2. The universe is the sum total of all these contingent things. Therefore, the universe itself is contingent and requires an explanation for its existence. 3. This explanation cannot be found within the universe itself, in another contingent thing, because that would just push the question back. This would lead to an infinite regress—a chain of explanations with no ultimate explanation. It would be like saying a book exists because it was copied from a previous book, which was copied from a previous one, and so

on forever. This never explains why there are any books at all. It's like a line of dominoes where each is knocked over by the one before it, but the first domino was never pushed. 4. Therefore, to have a complete and final explanation, there must be a being whose explanation is not found in another, but in the necessity of its own nature. There must be a Necessary Being, an uncaused cause, that grounds the existence of everything else. This Necessary Being is what all people understand to be God. Deducing the Attributes of the First Cause By combining the conclusions of both arguments, we can deduce several remarkable attributes of this First Cause of the universe : • Uncaused and Necessary: As the Leibnizian argument shows, it must exist by a necessity of its own nature, not depending on anything else. • Beginningless and Timeless: Since it created time along with the universe, it must exist outside of time. It never began to exist, which is why it doesn't need a cause. • Spaceless and Immaterial: Since it created space and matter, it must transcend them. It cannot be a physical object. • Enormously Powerful: It brought the entire universe into being from nothing (ex nihilo). • Personal: There are two types of causes we know of: an impersonal set of conditions (like water freezing at 0 degrees Celsius) or a personal agent with volition (like an author writing a book). Since there were no natural laws or physical conditions before the universe existed, the cause cannot be natural or impersonal. The cause must be a personal agent who freely chose to create the universe. This conclusion powerfully refutes the common objection, "If everything has a cause, then what caused God?" . This question misunderstands the very first premise. The premise is not "Everything has a cause, " but "Whatever begins to exist has a cause" . The entire point of the argument is to reason from things that are caused and contingent to a being that is, by its very nature, uncaused and necessary. Asking what caused the uncaused cause is a logical contradiction, like asking, "Who is the bachelor's wife?" The argument concludes with a being that never began and therefore does not need a cause. That is what we mean by God.

Extra Notes & Resources for Deeper Study

This is a deep topic, and this session is just an introduction. For those who want to explore further, here are some excellent resources.

Key Thinkers to Know:

• Al-Ghazali (1058-1111): A brilliant Persian Muslim theologian who masterfully articulated the Kalam argument against the idea of a beginningless universe. • Thomas Aquinas (1225-1274): A towering figure in Christian philosophy, his famous "Five Ways" include versions of the cosmological argument based on motion, causation, and contingency. His arguments are more in line with the Leibnizian tradition. • Gottfried Leibniz (1646-1716): A German philosopher and mathematician who formulated the argument from contingency based on his Principle of Sufficient Reason. • William Lane Craig (1949-Present): A contemporary Christian philosopher and theologian who is the world's foremost defender of the Kalam Cosmological Argument. His work has been instrumental in bringing this argument back to the forefront of modern philosophy. • Edward Feser (1968-Present): A Catholic philosopher who is a leading expert on the arguments of Thomas Aquinas. He is an excellent resource for understanding the argument from contingency and the metaphysics behind it. • Alexander Pruss (1973-Present): A philosopher who has written extensively in defense of the Principle of Sufficient Reason, providing a rigorous foundation for the Leibnizian argument. Recommended Reading: • For a clear and accessible introduction: o William Lane Craig, On Guard: Defending Your Faith with Reason and Precision. This book is written for laypeople and provides a fantastic overview of the Kalam argument and other key apologetic topics. • For a more in-depth academic treatment:

o William Lane Craig, The Kalam Cosmological Argument. This is Craig's seminal work on the topic. o Edward Feser, The Last Superstition: A Refutation of the New Atheism. Feser provides a fiery and brilliant defense of the Aristotelian-Thomistic arguments. o Alexander Pruss, The Principle of Sufficient Reason: A Reassessment. A comprehensive and rigorous philosophical defense of the PSR. Online Resources: • ReasonableFaith.org: William Lane Craig's website is a treasure trove of articles, podcasts, and videos on the Kalam argument and many other topics. His animated videos are particularly helpful for grasping the core concepts. • Edward Feser's Blog: For those interested in the Thomistic and Leibnizian versions of the argument, Feser's blog is an invaluable (and challenging) resource. • Stanford Encyclopedia of Philosophy: For a neutral, academic overview, search for their entries on "Cosmological Argument" and "Principle of Sufficient Reason. "

Discussion Questions

1. Have you ever wondered, "Why is there something rather than nothing?" How does the cosmological argument, in its two forms, provide a satisfying answer to that question? 2. Which version of the argument—the one from the beginning of the universe (Kalam) or the one from everything needing an explanation right now (Contingency)—do you find more compelling, and why? 3. The scientific evidence for the Big Bang seems to strongly support the second premise of the Kalam argument. How does this connection between modern science and ancient philosophy affect your confidence in the argument? 4. How would you respond to a friend who asks, "Okay, but who created God?" How can we explain that this question misunderstands the argument's conclusion about a necessary and uncaused being? 5. The argument leads to a "personal" creator. What does that mean to you, and why is it more significant than an impersonal force or a brute fact?

Further Study Worksheet: Two Paths to the Same Conclusion

The Cosmological Argument offers at least two distinct paths that lead to a transcendent Creator. Understanding the difference between them can make your grasp of the argument much stronger. Feature The Kalam Argument (from the Beginning) The Leibnizian Argument (from Contingency) Core Question How did the universe begin? Why does the universe exist at all (right now)? Key Principle Whatever begins to exist has a cause. Everything that exists needs an explanation (Principle of Sufficient Reason). Focus A temporal series of causes going back in time. A hierarchical series of explanations in the present moment. Depends On... The universe having a finite past. The universe being contingent (it could have failed to exist). What it Refutes The idea of an eternal, beginningless universe. The idea that the universe is a "brute fact" with no explanation. Analogy A line of dominoes falling one after another. You need a first domino to start the chain. A stack of books on a table. You need the table to hold up the whole stack right now. Conclusion A First Cause that began the universe. A Necessary Being that sustains the universe in existence.

Reflection Question: Both arguments conclude with a being that is uncaused, necessary, and transcendent. How does seeing the same conclusion reached from two very different starting points (the beginning of time vs. the present moment of existence) strengthen the overall case for God's existence?

Supplemental Study

Week 1: The Ontological Argument

The cosmological argument is an a posteriori argument, meaning it begins with observations of the world. But there is another famous class of argument that is purely a priori—it reasons from a definition to a conclusion without relying on external evidence. The most famous of these is the Ontological Argument, first formulated by St. Anselm of Canterbury in the 11th century. Anselm's Argument: Anselm began with a simple definition of God that he believed even an atheist could accept for the sake of argument: God is "that than which nothing greater can be conceived. " In other words, God is the greatest conceivable being. The argument then proceeds in these steps: 1. It is a conceptual truth that God is the greatest conceivable being. 2. God exists as an idea in the mind. 3. A being that exists as an idea in the mind and in reality is greater than a being that exists only as an idea in the mind. 4. Therefore, if God exists only as an idea in the mind, then we can conceive of something that is greater than God (a being that also exists in reality). 5. But we cannot conceive of something that is greater than God (for it is a contradiction to conceive of something greater than the greatest conceivable being). 6. Therefore, God exists in reality. Thinking it Through: This argument can feel like a philosophical sleight of hand, but it's a serious piece of reasoning. Anselm's core insight is that existence is a perfection. A being that actually exists is greater than one that is merely imaginary. If we define God as the most perfect, greatest conceivable being, then existence must be one of His attributes. To say, "I can conceive of the greatest possible being, but that being doesn't exist, " is a logical contradiction. You would be saying you can conceive of a

being greater than the greatest conceivable being—namely, one that has all the same perfections but also has the perfection of existing in reality. While many philosophers have debated this argument for centuries, it remains a powerful testament to how the very idea of a perfect being seems to demand that being's existence. It complements the cosmological argument by showing that we can arrive at the conclusion of God's existence not only by looking at the world, but by looking at the nature of reason and being itself.