Change is one thing, progress is another.

Man can be stimulated by hope or driven by fear, but the hope and the fear must be vivid and immediate if they are to be effective without producing weariness.

Orthodoxy is the death of intelligence.

For over two thousand years it has been the custom among earnest moralists to decry happiness as something degraded and unworthy

Certain characteristics of the subject are clear. To begin with, we do not in this subject deal with particular things or particular properties: we deal formally with what can be said about any thing or any property. We are prepared to say that one and one are two, but not that Socrates and Plato are two.

In any closet, you can find it, if it is too small, or out of style, or there is just one of it where there should be two

It appeared to me obvious that the happiness of mankind should be the aim of all action, and I discovered to my surprise that there were those who thought otherwise.