It does not matter what men say in words, so long as their activities are controlled by settled instincts. The words may ultimately destroy the instincts; but until this has occurred, words do not count.

Mathematics as a science, commenced when first someone, probably a Greek, proved propositions about "any" things or about "some" things, without specifications of definite particular things.

Human life is driven forward by its dim apprehension of notions too general for its existing language.

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

Each human being is a more complex structure than any social system to which he belongs.

Art flourishes where there is a sense of adventure, a sense of nothing having been done before, of complete freedom to experiment.

Rightness of limitation is essential for growth of reality.