If man chooses oblivion, he can go right on leaving his fate to his political leaders. If he chooses Utopia, he must initiate an enormous education program - immediately, if not sooner.

There is no joy equal to that of being able to work for all humanity and doing what you're doing well.

Ninety-nine per cent of who you are is invisible and untouchable.

Those who play with the devil's toys will be brought by degrees to wield his sword.

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.

Our power is in our ability to decide.

I'm not trying to copy Nature, I'm trying to find the principles she's using.