Psychology is concerned with the what and how of mental life, not the why.
译文：人生就像一场醉梦，快乐忧愁都不要太当真。
The study of heuristics reveals how we make quick, efficient decisions, but also how these shortcuts can lead to systematic errors.
解释：美色各不相同，看起来都很美好；动听的乐声各不相同，听起来都很快意。
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."
"To forget is to lose a part of ourselves, but to remember is to keep it alive."