It is more important that a proposition be interesting than that it be true.

There is no greater hindrance to the progress of thought than an attitude of irritated party-spirit.

Philosophy is the self-correction by consciousness of its own initial excess of subjectivity.

I am also greatly indebted to Bergson, William James, and John Dewey. One of my preoccupations has been to rescue their type of thought from the charge of anti-intellectualism, which rightly or wrongly has been associated with it.

Inventive genius requires pleasurable mental activity as a condition for its vigorous exercise

Identification of rhythm as the casual counterpart of life; wherever there is some life, only perceptible to us when the analogies are sufficiently close.

I will not go so far as to say that to construct a history of thought without profound study of the mathematical ideas of successive epochs is like omitting Hamlet from the play which is named after him. That would be claiming too much. But it is certainly analogous to cutting out the part of Ophelia. This simile is singularly exact. For Ophelia is quite essential to the play, she is very charming . . . and a little mad.