Only a monomaniac gets anything done.

Life is a preparation for the future; and the best preparation for the future is to live as if there were none.

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.

You cannot love a car the way you love a horse. The horse brings out human feelings the way machines cannot do. Things like machines may develop or neglect certain things in people ... Machines make our life impersonal and stultify certain elements in us and create an impersonal environment.

Insanity: doing the same thing over and over again and expecting different results.

Life is like a bicycle; keep moving on to maintain balance.

The whole of science is nothing more than a refinement of everyday thinking.