成功是一系列小勝利的積累。
找到平靜的唯一方法是與自己和解。
人類行為的首要原則是，一個人會做他認為能滿足自己欲望的事情。
The mind's first duty is to keep the organism going.
Civilization is not inherited; it has to be learned and earned by each generation anew.
The key to progress is persistence and curiosity.