Diane Setterfield said this quote
“ Politeness. Now there's a poor man's virtue if ever there was one. What's so admirable about inoffensiveness, I should like to know. After all, it's easily achieved. One needs no particular talent to be polite. On the contrary, being nice is what's left when you've failed at everything else. People with ambition don't give a damn what other people think about them. ”