The one who walks alone, is likely to find himself in places no one has ever been.

A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it.

Everyone must become their own person, however frightful that may be.

You can never solve a problem with the same kind of thinking that created the problem in the first place.

No idea is conceived in our mind independent of our five senses [i.e., no idea is divinely inspired].

I cannot then believe in this concept of an anthropomorphic God who has the powers of interfering with these natural laws. As I said before, the most beautiful and most profound religious emotion that we can experience is the sensation of the mystical. And this mysticality is the power of all true science.

Concern for man himself must always constitute the chief objective of all technological effort