Happily married couples aren't smarter,richer,
or more psychologically astute than ohters.
But in their day-to-day lives,
they have hit upon a dynamic that keeps the negative thoughts
and fellings about each other(which all couples have)from overwhelming their postive ones.
—John Gottman(以研究婚姻关系著名的美国心理学家)
快乐夫妻并非更聪明、更富有，他们的心理也不比别人更敏感。
但在日常生活里，他们偶然触发了一种动力，即不让彼此的负面想法和情绪（这是每对夫妻都有的）盖过正面的（想法和情绪）。
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连岳注：快乐夫妻绝非不红脸，不争吵，没烦恼，而是他们懂克制，善调整，收益为正数。