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.
Innovation distinguishes between a leader and a follower.
广义相对论已经通过了我们所有的测试，甚至在超大质量黑洞附近也是如此。
Your time is limited, so don't waste it living someone else's life.
