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.

A society’s competitive advantage will come not from how well its schools teach the multiplication and periodic tables， but from how well they stimulate imagination and creativity.

A purpose of human life, no matter who is controlling it, is to love whoever is around to be loved.

I'm not a light, I'm a darkness.

概率论是我们处理不确定性的唯一工具。