如果你想拥有从未有过的东西，就必须愿意做从未做过的事。

Leadership is about inspiring others to see possibilities where they once saw obstacles.

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

One of my primary objects is to form the tools so the tools themselves shall fashion the work and give to every part its just proportion.

20多岁时，人格的变化比人生中任何其他时期都要大。