Every thought serves a purpose, even when we don't immediately perceive it.

The habit of reading is the only enjoyment in which there is no alloy; it lasts when all other pleasures fade.

先验与后验的区别是认识论的，而非形而上学的。

Always be prepared. The more you know, the less you carry.

The mind is a biological instrument for managing life's challenges.

橄榄树教会我们，力量来自深厚的根基。