Most people stop looking when they find the proverbial needle in the haystack. I would continue looking to see if there were other needles.

We know nothing at all. All our knowledge is but the knowledge of schoolchildren. The real nature of things we shall never know.

I was sitting in a chair in the patent office at Bern when all of a sudden a thought occurred to me: "If a person falls freely he will not feel his own weight." I was startled. This simple thought made a deep impression on me. It impelled me toward a theory of gravitation.

I love Humanity but I hate humans

Berlin is the place to which I am most closely bound by human and scientific ties.

The solution to this problem lies in the heart of mankind.

The enormous mental resilience, without which no Chess player can exist, was so much taken up by Chess that he could never free his mind of this game