The individual who has experienced solitude will not easily become a victim of mass suggestion.

That which is impenetrable to us really exists. Behind the secrets of nature remains something subtle, intangible, and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion.

The release of atomic power has changed everything except our way of thinking ... the solution to this problem lies in the heart of mankind. If only I had known, I should have become a watchmaker. (1945)

The difference between stupidity and genius is that genius has its limits.

Belief in an external world independent of the perceiving subject is the basis of all natural science.

The mind can proceed only so far upon what it knows and can prove. There comes a point where the mind takes a higher plane of knowledge, but can never prove how it got there. All great discoveries have involved such a leap

Love is not the stupidest thing a man does, but it cannot be blamed on gravity.