I hate the quote... Barack Obama used it as well... I have a philosopher that I like; Diogenes of Sinope - he is a cynic; if you say that cynics achieve nothing then you might as well say that "no one achieves anything"; what do we achieve in life?
There is a disease mentioned after him.... insults about cynics are about bad cynics (whom I personally would not call cynics; when you use it the way the quote is aimed you better aim at the MASTER cynic and then the quote becomes unusable ); people who do not believe in the good of others nor of their selves and thus doomed to never believe in the good of others.
I believe you are good. I do. And Obama is a douche.