William Congreve, an English playwright, coined the adage “Married in haste, we may repent at leisure,” in his 1693 comedy “The Old Batchelour,” but it quickly evolved into sage advice for other human behaviors. California Gov. Gavin Newsom could regret hasty political promises to California’s Black population — to appoint a Black woman to the U.S. Senate if a seat becomes vacant, and provide meaningful reparations for the state’s woeful history of racial discrimination — that he probably cannot honor.