Energy cannot be created or destroyed, it can only be changed from one form to another.

One is born into a herd of buffaloes and must be glad if one is not trampled under foot before one's time.

Numerous are the academic professors, but rare are wise and noble teachers.

Even if you have to go through hell - go without hesitation.

In my personal experience I have hardly come to know the wretchedness of mankind better than as a result of the general theory of relativity and everything connected to it. But it doesn't bother me.

The intuitive mind is a sacred gift.

We are in the position of a little child entering a huge library, whose walls are covered to the ceiling with books in many different languages. The child knows that someone must have written those books. It does not know who or how. It does not understand the the languages in which they are written. The child notes a definite plan in the arrangement of the books, a mysterious order, which it does not comprehend but only dimly suspects.