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.

数学的本质在于其自由性。

The truth is rarely pure and never simple.

你不必成为最好的，你只需要尽力而为。

"The beauty and mystery of this world only emerges through affection, attention, interest and compassion."

The laws of behavior are as precise as those of physics.