Aquinas, Anselm, Augustine and the Existence of God

I was asked this at another site.

Do you think the classical proofs by Thomas Aquinas, Anselm of Canterbury or Augustin are of help [in demonstrating the rationality of belief in the existence of God]?

I answered thusly:

Yes, I do. Not as rigid mathematical proofs, but for showing the reasonableness of theistic, and specifically Christian, belief.

I came to believe in the existence of God from a very simple teleological argument -- from cartoon to cartoonist; from man, infinitely more complex and valuable than a two-dimensional cartoon, to man's Creator. It may not be philosophically rigorous, but it was persuasive.

The Kalam argument promoted by William Lane Craig is very powerful, and the Argument from Transcendence (the proof from the immaterial existence of Logic) I also find persuasive.

Peter Kreeft in his Handbook of Christian Apologetics, has 20 arguments for the existence of God. Among these, I like the argument from human desire, the moral argument, and the argument from conscience. I suppose you could bundle them all up and create an argument from Coherence -- a theistic belief "makes sense" of the data of life, while an a-theistic belief, to me, is not just highly improbable, but utterly incoherent.

And that's the way the transcendental Ball bounces.