A good marriage takes work and shouldn't be based on feelings alone.
一段好的婚姻要用心去经营,而不是仅仅建立在感情的基础上。
One wrong (or false) move can lose the whole game.
棋错一著,全盘皆输。
Although mankind has undergone no general improvement in intelligence or morality, it has made extraordinary progress in the accumulation of knowledge.