Society does.

And the result is that you are so hard to please that I don't believe you will ever marry.

You look for a perfection in others which is not to be found in yourself." "I don't fancy I should appear to advantage side by side with perfection," said Charles, in his most careless manner; and he rose, and wandered away into the garden.
He was irritated with Lady Mary, with her pleased looks during the last few days, with her annoying celerity that afternoon in the garden.

It was all the more annoying because he was conscious that Ruth amused and interested him in no slight degree.

She had the rare quality of being genuine.