“Any fool can criticize, condemn, and complain — and most fools do.”
Benjamin Franklin (1706–1790) American author, printer, political theorist, politician, postmaster, scientist, inventor, civic activist, …
Attributed in various post-2000 works, but actually Dale Carnegie in How to Win Friends and Influence People p.14 http://books.google.com/books?id=yxfJDVXClucC&pg=PA14&dq=fool, published in 1936. (N.B. Carnegie is quoting Franklin immediately prior to writing this, so attribution could be due to a printing error in some edition). <br class="br">Misattributed