天下的治乱不在于一个王朝的兴亡，而在于百姓的忧乐

做决定是困难的，也因此益发珍贵

孩子天生就能改进他们的行为，而且他们也喜欢这样。心理学家说，孩子必须游戏、因为借着游戏，孩子的发展才能更趋完善。

Make decisions when you are ready, not under pressure. Others will always push you to make a decision for their own purposes, internal politics, or some other external need. But you can almost always say, “I need a little more time to think about this. I’ll get back to you.” This tactic is very effective at defusing even the most difficult and uncomfortable situations.

算法的美不在于它们的复杂性，而在于它们高效解决问题的能力。