My favorite is a quote by Lemony Snicket. “Of course, it is boring to read about boring thing, but it is better to read something that makes you yawn with boredom than something that will make you weep uncontrollably, pound your fists against the floor, and leave tearstains all over your pillowcase, sheets, and boomerang collection.” Another great quote is “A man is as old as he feels to be” Others are: "Opportunity may knock only once, but temptation leans on the doorbell." "Good supervision is the art of getting average people to do superior work." "Wit is educated insolence."