A successful harvest begins with listening to the wisdom of those who came before us.

没有永恒的事实，就像没有绝对的真理一样。

领导力意味着有勇气做出艰难的决定，并有谦逊之心从错误中学习。

我能计算天体的运动，却无法计算人们的疯狂。

The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.

传记是让逝者重生的艺术。