Be yourself and don't care what others think.

积极心理学不是一项观赏性运动

A long habit of not thinking a thing wrong gives it a superficial appearance of being right.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.