Emotions are adaptations that have evolved to coordinate other psychological mechanisms in solving specific adaptive problems.

The price of freedom is eternal vigilance.

I used to think the world was broken down by tribes. Then I thought it was broken down by rich and poor. Then I thought it was broken down by stupid and smart. But I know now that it is broken down by people who are alive and people who are dead.

真相往往比虚构更不可思议。