It is the greatest mistake to think that man is always one and the same. A man is never the same for long. He is continually changing. He seldom remains the same even for half an hour.

A miracle is not the breaking of physical laws, but rather represents laws which are incomprehensible to us.

Without struggle, no progress and no result. Every breaking of habit produces a change in the machine.

It is the same with everything else, with food, with pleasures, with sleep; with everything there is a limit to what is necessary. After this "sin" begins. This is something that must be grasped, a "sin" is something which is not necessary.

Laughter relieves us of superfluous energy, which, if it remained unused, might become negative, that is, poison. Laughter is the antidote.

The greatest untold story is the evolution of God.

Better to die than live in sleep.