Vigorous societies harbour a certain extravagance of objectives.

You cannot evade quantity. You may fly to poetry and music, and quantity and number will face you in your rhythms and your octaves.

I always feel that I have two duties to perform with a parting guest: one, to see that he doesn't forget anything that is his; the other, to see that he doesn't take anything that is mine.

To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.

I have suffered a great deal from writers who have quoted this or that sentence of mine either out of its context or in juxtaposition to some incongruous matter which quite distorted my meaning, or destroyed it altogether.

An enormous part of our mature experience cannot not be expressed in words.

Ninety percent of our lives is governed by emotion.