If at first you don't succeed, you may be at your level of incompetence already.
Everyone is in awe of the lion tamer in a cage with half a dozen lions-everyone but a school bus driver.
An economist is an expert who will know tomorrow why the things he predicted yesterday didn't happen today.
Against logic there is no armor like ignorance.
You shouldn't punish others for your own choices.
There is no stigma attached to recognizing a bad decision in time to install a better one.