我的雄心不仅是走得比前人更远，还要到达人类可能到达的最远处。

真相很少是纯粹的，也从来不是简单的。

物理学的美在于它能够用简单而优雅的理论解释复杂的事物。

古代著书立说的人，都是有所为而为之，不是随便写写的。

The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.