1. Everything that begins to exist has a cause.
2. The universe began to exist.
3. Therefore the universe has a cause.
Pretty straightforward, right? Al-Ghazali, the great Sufi sheikh, used the argument to defeat the Aristotelian Avicenna in the intellectual conflicts within Islam during the Middle Ages. At the time the crux of the argument was the second premise, and whether it was possible to prove philosophically that the universe began to exist. On the Catholic side, St Thomas Aquinas held that it could not be proved, while St Bonaventure said that it could. (This raises the interesting side question: in an argument between an angelic doctor and a seraphic doctor, whose side do you choose?)
Anyway, we know now the universe did begin to exist, so the argument has switched to the first premise. Now atheists are attempting to find ways of claiming that, while yes, if a white rabbit suddenly popped into existence in front of you, twitched its whiskers, consulted its pocket watch and declared that it was very late, that would require an explanation, the universe belongs to a whole different category. In the words of Mr Bertrand Russell, the universe is just a brute fact, and one has to accept it.
In fact, Mr Russell was anticipated by the Angelic Doctor, who pointed out that there were only two worthwhile arguments against the existence of God: the problem of evil, and that the universe can exist fine on its own. The second argument he considered to have some strength precisely because he considered it impossible to prove philosophically that the universe had a beginning. But if it was possible to show by other methods that the universe did begin then, well, game over.
But now we know the universe appeared as unexpectedly as any rabbit out of a hat. But that has not stopped Mr Carl Sagan and co repeating their mantra: 'The Cosmos is all that is or ever was or ever will be.'
So we find ourselves in a curious position: theists are the new sceptics, atheists the new believers. All our experience would indicate that things don't just pop into existence on their own, and as such, why should the universe be exempted from what applies to everything within it? But no, cry the true believers, that's all very well for all the little stuff, but the big one, the universe, you know, that basically, well, just happened. Like.
So who are the true believers now?
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