"I hold that moral intuitions are nothing but learned prejudices. Historic examples from slavery to the divine right of kings to tortured confessions of witchcraft or Judaism to the subjugation of women to genocide all point to the fallibility of these 'moral intuitions'. There is absolutely no sense to the claim that its conclusions are to be adopted before those of a reasoned argument." - Alonzo Fyfe
I'm not sure you can get anywhere without relying on intuitions at all. Some intuitions might hold more weight than others, but ultimately it's intuitions all the way down.
(Since there didn't seem to be one for this month, and I just ran across a nice quote.)
A monthly thread for posting any interesting rationality-related quotes you've seen recently on the Internet, or had stored in your quotesfile for ages.