我们必须始终质疑我们的假设，并愿意根据新的证据修订我们的理论。

The consequences of this problem make themselves felt in bookshops. When you go to a large bookshop and look at the self-help sections, as I sometimes do -- if you analyze self-help book sproduced in the world today, there are basically two kinds. The first kind tells you, "You can do it! You can make it! Anything's possible!" The other kind tells you how to cope with what we politely call "low self-esteem," or impolitely call, "feeling very bad about yourself."

The key to progress is persistence and curiosity.

表演最有价值的部分是与人在深层次上建立联系。

技术的创新让我们能够比以往任何时候都看得更远的太空。