Science without ethics is like a ship without a compass.

"Sometimes, the hardest part isn't letting go but rather learning to start over."

The state is the most important institution in human history.

真正的发现之旅不在于寻找新的风景，而在于拥有新的眼光。

Listen to me, my friend. Hope is a dangerous thing. Hope can make people crazy.

幸福来自内心。