A man's value to the community primarily depends on how far his feelings, thoughts, and actions are directed towards promoting the good of his fellows.

I sometimes ask myself how it came about that I was the one to develop the theory of relativity. The reason, I think, is that a normal adult never stops to think about problems of space and time. These are things which he has thought about as a child. Bu t my intellectual development was retarded,as a result of which I began to wonder about space and time only when I had already grown up.

The same thinking that has led you to where you are is not going to lead you to where you want to go.

Don't second guess the mistakes you've made, others will do that for you. Make things as simple as possible, but not simpler.

The only thing we can be certain of in this life is that we can be certain of nothing.

It is the duty of every citizen according to his best capacities to give validity to his convictions in political affairs.

The state is made for man, not man for the state.... That is to say, the state should be our servant and not we its slaves