3.5 A Philosophical Portrait of the First Cause

We have just seen that if the universe began to exist, and if whatever begins to exist has a cause, then it follows logically that the universe has a cause. But what kind of cause could produce something as radical as existence itself? A philosophical analysis of the conditions required for such a cause allows us to identify a number of essential properties:

1. A non-physical cause

   • The cause of the universe cannot be physical or material, for the simple reason that matter itself began to exist with the beginning of the universe. If matter has a beginning, then its cause cannot be made of the very thing it brings into existence. The cause must therefore be immaterial, independent of particles, fields, or the laws of physics.

   • This rules out a purely naturalistic or materialistic explanation of the origin of the universe: nature cannot bring itself into being.

2. A cause outside of time

   • Time, according to current cosmological models (general relativity, the standard model), begins with the universe. This implies that the cause of the universe must exist outside of time: it is eternal, or at least timeless prior to creation.

   • Such a cause is not subject to the succession of moments or the passage of time: it exists in a form of eternal simultaneity.

3. An extremely powerful cause

   • Creating an entire universe—containing hundreds of billions of galaxies, each populated by billions of stars—requires an immeasurable level of power. Even if we imagine that this cause acts only once (at the moment of creation), the magnitude of such an act far exceeds anything we can observe or conceive.

   • What is at stake here is not relative power (mechanical force, measurable energy), but ontological power: the capacity to bring being into existence from nothing.

4. A personal or intentional cause

   • This is one of the most debated aspects: did the cause of the universe act intentionally? Some philosophers (such as William Lane Craig) argue that only a will can produce a temporal effect from a timeless cause.

   • An impersonal cause, such as a physical law, produces its effects necessarily and timelessly. If the conditions are met, the effect follows immediately.
     But in the case of the universe, we observe an effect (the Big Bang) that has a beginning, while the cause (outside of time) would have always existed.
     Why did the universe begin 13.8 billion years ago rather than earlier—or not at all?

   • The best explanation is that there was a choice to create—which implies intelligence and will.