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

"Psychology must focus on the utility of mental operations."

任何心理活动的价值都以其对成功生活的贡献来衡量。

The mind evolves to meet the demands of existence.

The stories we don’t tell are the ones that haunt us the most.

唯一真正的失败是不去尝试。

书籍是最安静且最恒久的朋友。