War is the ultimate tool of politics.

A problem adequately stated is a problem solved theoretically and immediately, and therefore subsequently to be solved, realistically.

Don't change the man. Change his environment.

However, if we leave the industrial machinery and their energy-distribution networks and leave them also all the people who have routine jobs operating the industrial machinery and distributing its products, and we take away from all the industrial countries all their ideologies and all the politicians and political machine workers, people would keep right on eating. Possibly getting on a little better than before.

Are you spontaneously enthusiastic about everyone having everything you can have?

The word generalization in literature usually means covering too much territory too thinly to be persuasive, let alone convincing. In science, however, a generalization means a principle that has been found to hold true in every special case.... The principle of leverage is a scientific generalization.

It is one of the strange facts of experience that when we try to think about the future, our thoughts jump backwards. It may well be that nature has some fundamental metaphysical law by which opening up what we call the future also opens up the past in equal degree.