每一次失败都是一次宝贵的经验。

Innovation is not the privilege of a few, but an opportunity for everyone.

要理解一个人，你必须先理解他们的沉默。

He who is not a good servant will not be a good master.

The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.

政治没有永恒的朋友，只有永恒的利益。

解释：身居高位的人容易骄纵自满，处于安乐生活中的人容易奢侈。