From the Writer's Almanac:
It's the birthday of the great essayist Michel de Montaigne, born in Périgueux, France (1533). His father was a wealthy landowner and a devout Catholic, with innovative ideas about child rearing. He sent the infant Michel off to live with peasant parents, so that he would learn to love the lower classes. Then, when Michel was a toddler, his father required everyone in the household to speak Latin rather than French, so that Latin would be his first language. Michel went off to college and became a lawyer. His father died when Michel was 38 years old, and so he retired to the family estate and took over managing the property. More than anything, he loved to write letters, but after a few years in retirement, his best friend died and he suddenly had no one to write to. So he started writing letters to an imaginary reader, and those letters became an entirely new literary genre: the essay.