Young researchers should not be afraid to challenge conventional wisdom.

Perfection is boring. If a face doesn't have mistakes, it's nothing.

The real giants have been those who have stood for something, who have had a clear idea of what they wanted to say and have said it with force and clarity.

In science, there is no such thing as a final answer.

没有任何一位总统能够忠实地、认真地履行他的职责，还能有闲暇时间。

白天鹅不每天沐浴，也是洁白的；黑乌鸦不每天暴晒，也是黑的。