The most precious things in life are not those you get for money.
If you've never failed, you've never tried anything new.
Combinatory play seems to be the essential feature in productive thought.
If you want different results, do not do the same things.
There are two different conceptions about the nature of the universe: (1) the world as a unity dependent on humanity; (2) the world as a reality independent of the human factor.
In every true searcher of Nature there is a kind of religious reverence, for he finds it impossible to imagine that he is the first to have thought out the exceedingly delicate threads that connect his perceptions