To me, 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, every single day.

The art of progress is to preserve order amid change and to preserve change amid order.

"We need to think of software not just as code, but as a mathematical object that can be analyzed and verified."

人的身体是人的灵魂最好的图画。

每个生物都在为生存而斗争。