Innovation distinguishes between a leader and a follower.
可持续性不是一种选择;而是我们对后代的责任。
A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.
没有社会这种东西,只有个人和家庭。
"Courage is not the absence of fear, but the triumph over it."