When I study philosophical works I feel I am swallowing something which I don't have in my mouth.

My political ideal is democracy. Let every man be respected as an individual and no man idolized.

Time is what the clock says.

The most superior of scientific goals is to embrace a maximum of experiment with a minimum of hypotheses.

When a man is sufficiently motivated, discipline will take care of itself.

It's no accident that capitalism has brought with it progress, not merely in production but also in knowledge. Egoism and competition are, alas, stronger forces than public spirit and sense of duty.

Any fool can know. The point is to understand.