The unconscious naturally weights the relative importance of various attributes. Conscious thought often leads to suboptimal weighting because it disturbs this natural process. --Ap Dijksterhuis
I'm not sure this is a very rationalist quote. In particular, many judgments people make and many biases come into play at a non-conscious level. We generally need to make a conscious effort to correct for those biases.
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.