To be uncertain is uncomfortable
...but to be certain is ridiculous. Graffiti behind BurgerTex on Guadalupe.
It's getting to where something like this, which is neither a personal tag nor (as far as I know) part of an organized guerrilla art campaign like the recent wheatpasted food, is rare enough to be noteworthy.
Google turns up lots of pages calling this saying a "Chinese proverb" and a few attributing it to Goethe. I'm more inclined to believe the latter but I haven't been able to find it in German. Anybody know for sure?