世界总是危险的，人们总是有好有坏。

The night is a great teacher, but the stars are its lessons.

The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.

Every hide carries potential; our job is to reveal it responsibly.

Technology is not just about the gadgets, it's about the people who use them.

无用的法律削弱了必要的法律。