I have spent 30 minutes looking for a GIF of this (which I do every 6 months or so).... I can't find it online, but here is the gist. I dearly wish I could find it online. I have it on paper but am nervous of the copyright issues of hosting it.
From Calvin & Hobbes...
Hobbes pushing Calvin in a small wagon down a steep, rocky hill.
Calvin: It's true Hobbes, ignorance is bliss! Once you know things you start seeing problems everywhere... and once you see problems you feel like you ought to try to fix them... and fixing problems always seems to require personal change... and change means doing things that aren't fun! I say phooey to that!
Ultimately they both crash over a cliff, with Hobbes lamenting that he can't handle so much bliss. In a disheveled heap, Calvin raises a hand in warning and says:
Careful, we don't want to learn anything from this!