Don’t take yourself, or others, so seriously that you cannot abandon yourself laughter or keep in high esteem those who do. Take Lincoln, for example:
“…not only throughout his life but on out into his posthumous fame and glory his penetrating mental activity would be obscured by his reputation as a teller of jokes, by the greater thread of humor that ran through his life and being. One can’t tell jokes and stories like those, and collapse in convulsions of laughter, and have humor as an essential constant part of one’s being, if one is an intellectually serious person” (5).
– William Lee Miller, Lincoln’s Virtues: An Ethical Biography (New York, NY: Vintage Books, 2003), 5.