The time will come when diligent research over periods will bring to light things which now lie hidden...Many discoveries are reserved for ages still to come, when memories of us will have been effaced. Our universe is a sorry little affair unless it has something for every age to investigate. nature does not reveal her mysteries once and for all.

When you see a man in distress, recognize him as a fellow man.

Trifling trouble find utterance; deeply felt pangs are silent.

Familiarity reduces the greatness of things.

The best ideas are common property.

Money has never yet made anyone rich.

We should conduct ourselves not as if we ought to live for the body, but as if we could not live without it.