Baltasar Gracián: Advice
Advice is sometimes transmitted more successfully through a joke than grave teaching.
Baltasar Gracián y Morales, SJ (8 January 1601 - 6 December 1658), formerly Anglicized as Baltazar Gracian, was a Spanish Jesuit and baroque prose writer and philosopher. He was born in Belmonte, near Calatayud (Aragon). His proto-existentialist writings were lauded by Nietzsche and Schopenhauer.