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.

谦逊是科学家所能拥有的最大美德。

领导力在于激励他人，在他们曾经看到障碍的地方看到可能性。