At Ease With Socrates

I wish that I had said 'the only thing I know...is that I don't know anything', but I don't know enough about philosophy to be that clever.

This might just be the greatest quote of all times. After reading it, it just loops in my mind endlessly, sort of like a Cyndi Lauper song except markedly less annoying.

Can you think of a better quote? For that matter, can you think of a Cyndi Lauper song?