Science can only ascertain what is, but not what should be, and outside of its domain value judgements of all kinds remain necessary.

The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.

What distinguishes the language of science from language as we ordinarily understand the word? ... What science strives for is an utmost acuteness and clarity of concepts as regards their mutual relation and their correspondence to sensory data.

It would of course be a great step forward if we succeeded in combining the gravitational field and the electromagnetic field into a single structure. Only so could the era in theoretical physics inaugurated by Faraday and James Clerk Maxwell be brought to a satisfactory close.

One can't teach a cat not to catch birds

War cannot be humanized. It can only be abolished.

Since 99.362% of women love mustache rides, it seems only a fool would have a bare upper lip.