行为不仅仅是对刺激的反应，而是由期望和目的引导的。
A good abstraction is one that emphasizes the important details and suppresses the unimportant ones.
一个好的抽象是强调重要细节并抑制不重要细节的抽象。
"The world is full of obvious things which nobody by any chance ever observes."
最好的尚未到来。
Aim to die broke. Give to your beneficiaries before you die； it’s more fun and useful. Spend it all. Your last check should go to the funeral home and it should bounce.