Day 2 companies make high-quality decisions, but they make high-quality decisions slowly. To keep the energy and dynamism of Day 1, you have to somehow make high-quality, high-velocity decisions.
Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.
I believe in the power of music to heal and inspire.
我时刻准备着学习,但是我不喜欢别人给我上课。
The key to investing is to have a margin of safety.