Both Uses

Socrates
in
Gulliver's Travels
(Edited)

I had the honour to have much conversation with Brutus; and was told, "that his ancestor Junius, Socrates, Epaminondas, Cato the younger, Sir Thomas More, and himself were perpetually together:" a sextumvirate, to which all the ages of the world cannot add a seventh.
Chpt 3

Socrates = ancient Greek philosopher who did much to influence Western thinking (470-399 BC)
Wherein he agreed entirely with the sentiments of Socrates, as Plato delivers them; which I mention as the highest honour I can do that prince of philosophers.
Chpt 4 *

Definitions:

(1) (Socrates)
ancient Athenian philosopher who did much to influence Western thinking; teacher of Plato and Xenophon (470-399 BC)

A memory trick to remember the relationships between Socrates, Plato, and Aristotle, and Alexander the Great is to put them in reverse alphabetical order: Socrates taught Plato who taught Aristotle, who taught Alexander the Great.
(2) (meaning too rare to warrant focus)