It is never possible to guarantee success, it is only possible to deserve it.

It is more agreeable to have the power to give than to receive.

I know of no case where a man added to his dignity by standing on it.

I'd rather spend half an hour in the company of a top carpenter, than three hours in the company of an average brain surgeon

Science bestowed immense new powers on man, and at the same time, created conditions which were largely beyond his comprehension.

It is not given to princes, statesmen and captains to pierce the mysteries of the future, and even the most penetrating gaze reaches only conclusions which, however seemingly vindicated at a given moment, are inexorably effaced by time.

For the first 25 years of my life, I wanted freedom. For the next 25 years, I wanted order. For the next 25 years, I realized that order is freedom.