The future is an unknown, but a somewhat predictable unknown. To look to the future we must first look back upon the past. That is where the seeds of the future were planted. I never think of the future. It comes soon enough.

I believe that I have really found the relationship between gravitation and electricity, assuming that the Miller experiments are based on a fundamental error. Otherwise, the whole relativity theory collapses like a house of cards.

I am doing just fine, considering that I have triumphantly survived Nazism and two wives.

The greater the doubt, the greater the awakening

He who cherishes the value of cultures cannot fail to be a pacifist.

For the most part, I do the thing which my own nature prompts me to do. It is embarrassing to earn so much respect and love for it.

Time has no independent existence apart from the order of events by which we measure it.