"In science we must all submit not to what seems to us attractive from one point of view or another, but to what represents an agreement between theory and experiment."

"If statements of fact themselves depend upon the person who observes them, how much more distinct is the reflection of the personality of him who gives an account of methods and of philosophical specu…"

"Science which deals with the infinite is itself without bounds."

"It was clear that in the United States there was a development not of the best, but of the middle and worst sides of European civilization; the notorious general voting, the tendency to politics... al…"

"Pleasures flit by -- they are only for yourself; work leaves a mark of long-lasting joy, work is for others."