Master and Doctor are my titles; for ten years now, without repose, I held my erudite recitals and led my pupils by the nose.

Whether one show one's self a man of genius in science or compose a song, the only point is, whether the thought, the discovery, the deed, is living and can live on.

Someone criticized an elderly man for wooing young women. He replied that that was the only way to rejuvenation, which was, afterall, everybody's wish.

You acquire a language most readily in the country where it is spoken; you study mineralogy best among miners; and so with everything else.

There is nothing outside of us that is not at the same time in us, and as the external world has its colors the eye, too, has colors.

What we don't understand we don't possess.

We who didn't inherit political power nor are made to acquire riches like nothing better than that which expands and solidifies the power of the spirit.