The history of philosophy is not, like the history of the sciences, to be considered as a mere chronological record of discoveries and errors. It is the history of the human spirit in its endeavor to understand itself and its relation to the universe.

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

最优秀的企业家是那些能够快速调整方向而不迷失最终愿景的人。