In this age of inventive wonders all men have come to believe that in some genius' brain sleeps the solution of the grand problem of aerial navigation-and along with that belief is the hope that that genius will reveal his miracle before they die, and likewise a dread that he will poke off somewhere and die himself before he finds out that he has such a wonder lying dormant in his brain. We all know the air can be navigated-therefore, hurry up your sails and bladders-satisfy us-let us have peace.
Mark TwainDuties are not performed for duty's sake, but because their neglect would make the man uncomfortable. A man performs but one duty - the duty of contenting his spirit, the duty of making himself agreeable to himself.
Mark Twain