The meaning of life, as explained by a 12-year-old girl.
(The visuals are required to get the joke.)
I don't see any rationality there, but the site seems a good resource for practising German. (Bilingual webcomic = bite-sized parts, usually fairly simple sentences, pictures provide hints, if still updated it becomes a regular exercise)
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.