Author Quotes and aphorisms about crowded Mark Twain Henry David Thoreau Mark Manson ,, Self Help is a notoriously crowded market, but I believe that I've successfully differentiated myse... Phyllis McGinley Samuel R. Delany Marya Hornbacher ,, I do have faith. I don't have faith that a God exists, nor do I have faith that one does not; I hav... Tim Ferriss