听我说，朋友，希望是件危险的事。希望能叫人发疯。
领导力就是让他人因为你的存在而变得更好，并确保这种影响在你离开后依然持续。
实现真正自由的唯一途径是通过自律。
The world is not dialectical—it is sworn to extremes, not to equilibrium, sworn to radical antagonism, not to reconciliation or synthesis.
The pursuit of knowledge for its own sake, an almost fanatical love of justice, and the desire for personal independence—these are the features of the Jewish tradition which make me thank my stars that I belong to it.