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.

计算思维的本质是抽象和自动化。

The West is not a place, it's a state of mind.

热切而强烈的渴望，是一切有效努力的泉源。

返祖现象是理解犯罪行为的关键。