不要走别人走过的路,去走没人走过的路并留下足迹。
Happiness is beneficial for the body, but it is grief that develops the powers of the mind.
There are only two tragedies in life: one is not getting what one wants and the other is getting it.
Innovation in science often comes from looking at old problems in new ways.
"And this I believe: that the free, exploring mind of the individual human is the most valuable thing in the world. And this I would fight for: the freedom of the mind to take any direction it wishes, undirected."