As long as you have stayed in a swan's egg, it doesn't matter if you were born in a duck yard.
旋风不能奏出动听的音乐；心灵手巧的妇人未必能够主持好饮食家务；（只会）做文章的读书人不能够治理好国家。
What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.