Pardon the bluntness, but I noticed the "parodying the Nicene Creed" bit, saw it as a failed attempt to be clever by adapting religious recitations to a naturalist end, was unimpressed (not because of some general principle against such adaptation), and voted it down still, without seeing it as tree-hugging.
Very well; deleted accordingly.
(Pardon me, however, if I'm a bit skeptical about there not being a "general principle" involved here -- Odifreddi's "credo" may not be all that witty -- and perhaps that's partly my fault, since the above was my translation -- but it would still deserve a place in this thread, were it not for aversions to "imitating" religion, and to reverential or emotional-sounding language in general. After all, since when do rationality quotes have to be witty or clever?)
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.