How will he who does not know how to govern himself know how to govern others?

Miguel de Cervantes Saavedra (1547 CE-1616 CE), Miguel de Cervantes Saavedra was an Early Modern Spanish writer widely regarded as the greatest writer in the Spanish language and one of the world's pre-eminent novelists. He is best known for his novel Don Quixote, a work considered as the first modern novel. The novel has been labelled by many well-known authors as the "best book of all time" and the "best and most central work in world literature".