Not a misquote, just slightly out of context. And I'm fairly sure Emerson would apply 'foolish' to most sorts of consistency.
It omits a crucial part of the quote that results in a completely different meaning. Leaving out an adjective that it is integral to the meaning is different than omitting some minor context.
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.