Quotes About Logic

Reason is, and ought only to be the slave of the passions.

Reason is, and ought only to be the slave of the passions, and can never pretend to any other office than to serve and obey them.

wickedness does not promote rational thought. This is, in fact, a major message of the scriptures.

Thus, reason tells us that it is rational to accept what reason alone cannot demonstrate.

In the United States, however, we have lost the thread of logic in the stories that we tell.

Hilda observed that science always loses its way when guided by ideology or wishful thinking.

If I've learned anything over the years, it's that the truth is generally a little unexpected, or even illogical, since we humans aren't entirely rational. Whereas lies, as a rule, tend to be consistent and comprehensive and often sound like a cliché - especially if the liars aren't very good.

Decidability is impossible. We are back in the land of paradox, with Epimenides declaring that he is a liar and Bertrand Russell upsetting Frege's applecart

If a man says 'I am lying' we say that it follows that he is not lying, from which it follows that he is lying and so on. Well, so what? You can go on like that until you were black in the face. Why not? It doesn't matter." For Turing, it did matter—not in some abstract or ideal sense but because he believed that hidden contradictions could result in things "going wrong.

God put enough into the world to make faith in Him a reasonable thing. But He left enough out to make it impossible to live by reason alone.

The only proof for the existence of God is that without God you couldn't prove anything.

If there is a God, he's a great mathematician.

God's existence cannot be deduced by reason alone.

To Napoleon on why his works on celestial mechanics make no mention of God: Your Highness, I have no need of this hypothesis.

If god wanted people to believe in him, why'd he invent logic then?

Reason can never prove the existence of God.

If God can do anything he can make a stone so heavy that even he can't lift it. Then there is something God cannot do, he cannot lift the stone. Therefore God does not exist.

Oh dear,' says God, 'I hadn't thought of that,' and promptly vanishes in a puff of logic.

All correct reasoning is a grand system of tautologies, but only God can make direct use of that fact

Carl Gustav Jacob Jacobi

As set forth by theologians, the idea of 'God' is an argument that assumes its own conclusions, and proves nothing.

I think we must attack -- wherever we meet it -- the nonsensical idea that mutually exclusive propositions about God can both be true.

It must be, for there is a logic to everything on this earth and nothing is done without a reason, that God sometimes lets scientists discover.

Reason in man is rather like God in the world.