The future of liberal democracy depends on its ability to adapt to new challenges and to maintain the support of its citizens.

人们改变了，却忘了告诉对方。

You can’t be afraid to fail. It’s the only way you succeed.

人类认知的力量来自于其概括的能力。

利润和可持续性不是对立的，而是长期成功的伙伴。

The question is not whether the thing exists， but whether it has any essence which is capable of existence without us.

学习Lisp是值得的，因为当你最终理解它时，你将获得深刻的启蒙体验；这种体验将使你在余下的日子里成为一个更好的程序员，即使你实际上并不经常使用Lisp本身。