可怜的是那些快乐取决于他人许可的人。
证明的严谨性将数学与所有其他科学区分开来。
未来属于那些愿意适应和进化的人。
The difference between good and great is attention to detail.
La verdadera patria del poeta es su lengua.
The most hateful thing for a man is to have knowledge of everything but power over nothing.