The secret of being miserable is to have leisure to bother about whether you are happy or not.
实现明天的唯一限制是我们今天的疑虑。
"The emotions are like a computer's output devices - they motivate action to solve specific adaptive problems."
解释：形体弯曲，影子自然就曲；形体正直，影子自然就正。
The work of the philosopher consists in assembling reminders for a particular purpose.
我不是没有素材，而是没有时间。
A program that has not been tested does not work.