The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

孔子说：“早上理解真理，晚上死也值得。”

Was everyone else really as alive as she was?... If the answer was yes, then the world, the social world, was unbearably complicated, with two billion voices, and everyone’s thoughts striving in equal importance and everyone’s claim on life as intense, and everyone thinking they were unique, when no one was. One could drown in irrelevance.

"The world is full of magic things, patiently waiting for our senses to grow sharper."

心理学必须建立在生活经验的事实基础上。