To be of use to the world is the only way to be happy.
对这个世界有所助益是获得快乐的唯一途径。
Cognitive biases are like optical illusions of the mind; they trick us into seeing the world not as it is, but as we expect or want it to be.
没有食物,人类最多只能活几个星期;没有它,社会正义的所有其他组成部分都毫无意义。