What is "filarete"

Antonio di Pietro Averlino (c. 1400 – c. 1469), also "Averulino", known as Filarete (from φιλάρετος, Greek for "lover of excellence"), was a Florentine Renaissance architect, sculptor, medallist, and architectural theorist. He is perhaps best remembered for his design of the ideal city of Sforzinda, the first ideal city plan of the Renaissance.