地质学研究的真正魅力在于从已知到未知的思维锻炼。

愚蠢的人畏惧生病，却经常生病，明智的人居安思危，危险才不会降临。

永远不要放弃你真正想要的东西。等待很难，但后悔更难。

在数学中，提出问题的艺术必须比解决问题更有价值。

I think that life is a gift and that it is important to take advantage of every moment.

Either you repeat the same conventional doctrines everybody is saying, or else you say something true, and it will sound like it's from Neptune.