科学是无穷尽的。
Happy the man, and happy he alone, he who can call today his own.
知识最大的敌人不是无知,而是知识的幻觉。
译文:听别人说不如亲眼看看,远远观望不如凑近细查。
In mathematics, the art of proposing a question must be held of higher value than solving it.
Wrong does not cease to be wrong because the majority share in it.