The Transcendental Argument is a philosophical attempt to prove the existence of God. It differs from arguments that look for evidence of God in the physical world. The transcendental argument says that without God, nothing can make sense at all. There are many things we assume, but we cannot prove them. We assume that logic works. We assume that there is consistency in the natural world. We assume that truth exists. However, we cannot prove any of these things scientifically. This is because these are the basic assumptions we must make to do science. All of these things make sense if we presuppose a worldview where God exists, because then we can say all these things are grounded in the mind of God. But if God does not exist, then we have no justification for these things we assume, and everything collapses. Thus, this argument hinges on the concept of necessary conditions. These are the things that must be true for something else to exist.

There are different versions of this argument, with variations in what is considered a necessary condition. Here are two prominent examples of it. Immanuel Kant argued that objective knowledge requires the existence of a perfect mind (God) to guarantee the truth and order of the universe we live in. C.S. Lewis argued that reason and logic themselves necessitate a source or foundation. Without God, the very act of reason crumbles because there is no basis for truth or falsity. The transcendental argument remains a debated topic in the philosophy of religion. It offers a unique approach to the question of the existence of God.