Imagination without knowledge may create beautiful things, knowledge without imagination can create only perfect ones.

Nonsense, seems to sum up everything.

Today we must abandon competition and secure cooperation. This must be the central fact in all our considerations of international affairs; otherwise we face certain disaster. Past thinking and methods did not prevent world wars. Future thinking must prevent wars...The stakes are immense, the task colossal the time is short. But we may hope- we must hope- that man's own creation, man's own genius, will not destroy him.

Belief in an external world independent of the perceiving subject is the basis of all natural science.

Classical thermodynamics ... is the only physical theory of universal content which I am convinced ... will never be overthrown.

... one does people the best service by giving them some elevating work to do and thus indirectly elevating them.

Ethical axioms are found and tested not very differently from the axioms of science. Truth is what stands the test of experience.