Spanish diplomat and man of letters, best known for his anti-Machiavellian emblem book, the Idea de un príncipe político cristiano (1640; The Royal Politician), which urged a return to traditional virtues as the remedy for national decadence.

After studying law at the University of Salamanca, Saavedra went to Rome, where he served under the Spanish ambassador to the Vatican. Rising steadily in the diplomatic ranks, he became one of the few Spaniards of his generation to travel widely and to become familiar with international politics. Distressed by Spain's declining political strength and prestige, he wrote his Idea to counsel the Spanish ruler. It comprises a meditation on the subject of principle versus opportunism, a Christian answer to Niccoló Machiavelli in the form of a commentary on 100 emblems. Saavedra is also remembered for La república literaria (1655; “The Republic of Letters”), a witty survey of Spanish literature, and for his Corona gótica (1646; “The Gothic Kingdom”), a history of Spain under the Goths.