Oh, nowadays so many conceited people go about Society pretending to be good, that I think it shows rather a sweet and modest disposition to pretend to be bad. Besides, there is this to be said. If you pretend to be good the world takes you very seriously. If you pretend to be bad, it doesn't. Such is the astounding stupidity of optimism.--Oscar Wilde, "Lady Windermere's Fan."
Wilde could have been writing for the current batch of presidential candidates--or most any candidates, actually. I think The Astounding Stupidity of Optimism is as catchy a title as The Audacity of Hope.