The progress of science is the gradual realization that we do not know.
科学的进步是我们逐渐意识到自己无知的过程。
最好的想法总是在你不刻意追求时出现。
Fearless is not the absence of fear. It’s not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.
The only way of discovering the limits of the possible is to venture a little way past them into the impossible.