Intellect distinguishes between the possible and the impossible; reason distinguishes between the sensible and the senseless. Even the possible can be senseless.

If God has made the world a perfect mechanism, He has at least conceded so much to our imperfect intellect that in order to predict little parts of it, we need not solve innumerable differential equations, but can use dice with fair success.

The world is full of zanies and fools, who don't believe in sensible rules, and won't believe what sensible people say. And because such daft and dewy-eyed dopes keep building up impossible hopes, impossible things are happening every day.

There's a difference between violence and senseless violence.

The scientific theory I like the best is that the rings of Saturn are composed entirely of lost airline baggage.

The belief that there is only one truth, and that oneself is in possession of it, is the root of all evil in the world