最甜美的果实往往来自最艰难的时节。
学习的每一个方面或智能的任何其他特征都可以原则上被精确描述,以至于可以制造一台机器来模拟它。
Fearless is not the absence of fear. It's not being completely unafraid. It's having a lot of fears, but jumping anyway.