Never outshine the master. Always make those above you feel comfortably superior.

"You can't always be happy, but you can always be brave."

The only way to do great work is to love what you do.

人类不仅是一种地质因素，而且可能是所有地质力量中最强大和最普遍的。

最大的错误就是以为自己无所不知。保持谦逊，不断学习。