Human nature is so constructed that it gives affection most readily to those who seem least to demand it.

One of the main causes of trouble in the world is dogmatic and fanatical belief in some doctrine for which there is no adequate evidence

To understand a name you must be acquainted with the particular of which it is a name.

Philosophy is an unusually ingenious attempt to think fallaciously.

One of the most painful circumstances of recent advances in science is that each one makes us know less than we thought we did

The only thing that will redeem mankind is cooperation.

If we were all given by magic the power to read each other's thoughts, I suppose the first effect would be to dissolve all friendships.