Mathematics has the completely false reputation of yielding infallible conclusions. Its infallibility is nothing but identity. Two times two is not four, but it is just two times two, and that is what we call four for short. But four is nothing new at all. And thus it goes on and on in its conclusions, except that in the higher formulas the identity fades out of sight.

Thinking is easy, acting is difficult, and to put one's thoughts into action is the most difficult thing in the world.

I was oppressed with the sensations I then felt; I sunk under the weight of them.

Desire is the presentiment of our inner abilities, and the forerunner of our ultimate accomplishments.

We are the slaves of objects around us, and appear little or important according as these contract or give us room to expand.

Because everyone uses language to talk, everyone thinks he can talk about language.

A human being needs only a small plot of ground on which to be happy, and even less to lie beneath.