The smallest details often hold the greatest truths.

The greatest discoveries often come from asking the simplest questions.

过去是一面镜子，但我们往往只看到自己想看的东西。

Human suffering and joy are universal, no matter where we come from.

The intelligence of that creature known as a crowd is the square root of the number of people in it.

心理学必须植根于有机体为生存而斗争的现实中。