The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.

世界不一定要这样。事情可以不同。

暴力是无能者的最后避难所。

追求数学真理是一场永无止境的冒险。