The self is not a solid thing but a collection of echoes.

"Books are the windows to other cultures."

Success is not final, failure is not fatal: It is the courage to continue that counts.

"The past is a candle at great distance: too close to let you quit, too far to comfort you."

我们就是自己的恶魔，而且你我让这个世界成了自己的地狱。

优化阻碍了发展。