Cruelty is, perhaps, the worst kid of sin. Intellectual cruelty is certainly the worst kind of cruelty.

If I think the universe is triangular, and you think it is square, there cannot be room for two universes. We may argue politely, we may argue humanely, we may argue with great mutual benefit: but, obviously, we must argue.

There are two kinds of people in the world, the conscious dogmatists and the unconscious dogmatists. I have always found myself that the unconscious dogmatists were by far the most dogmatic.

Whatever else we may say of our own age, for good or evil, nobody is likely to call it an Age of Reason.

The riddles of God are more satisfying than the solutions of man.

It is quite an old-fashioned fallacy to suppose that our objection to scepticism is that it removes the discipline from life. Our objection to scepticism is that it removes the motive power. Materialism is not a thing which destroys mere restraint. Materialism itself is the great restraint.

The books that influence the world are those that it has not read.