[Kepler] had to realize clearly that logical-mathematical theoretizing, no matter how lucid, could not guarantee truth by itself; that the most beautiful logical theory means nothing in natural science without comparison with the exactest experience. Without this philosophic attitude, his work would not have been possible.

You cannot solve current problems with current thinking. Current problems are the result of current thinking.

It is easy to say something new, if all senses one will eschew. But hardly ever is found, that the new is also sound.

From the standpoint of daily life, however, there is one thing we do know: that we are here for the sake of each other.

It seems to me an utterly futile task to prescribe rules and limitations for the conduct of war. War is not a game; hence one cannot wage war by rules as one would in playing games. Our fight must be against war itself. The masses of people can most effectively fight the institution of war by establishing an organization for the absolute refusal of military service.

The environment is everything that isn't me.

In any conflict between humanity and technology, humanity will win.