道德的人和荣誉的人之间的区别在于，后者即使在不光彩的行为奏效时也会感到后悔。
The difference between a moral man and a man of honor is that the latter regrets a discreditable act even when it has worked.
对探究的自由必须没有任何障碍……科学中没有教条的位置。
对于真理的崇敬，是对智慧的最高礼赞。
True understanding comes from grasping the inner structural relationships of a problem.
The future is something we can shape, not just something that happens to us.