对验证的渴望是可以理解的，但并不总能得到满足。

You know, in the Middle Ages, in England, when you met a very poor person, that person would be described as an "unfortunate" -- literally, somebody who had not been blessed by fortune, an unfortunate.

Act as if what you do makes a difference. It does.

AI伦理和安全对可持续发展至关重要。