A sage (σοφός, sophos), in classical philosophy, is someone who has attained wisdom. The term has also been used interchangeably with a 'good person' (ἀγαθός, agathos), and a 'virtuous person' (σπουδαῖος, spoudaios). Among the earliest accounts of the sage begin with Empedocles' Sphairos. Horace describes the Sphairos as "Completely within itself, well-rounded and spherical, so that nothing extraneous can adhere to it, because of its smooth and polished surface." Alternatively, the sage is one who lives "according to an ideal which transcends the everyday."[ Annas, Julia. The Sage in Ancient Philosophy]
Several of the schools of Hellenistic philosophy have the sage as a featured figure. Karl Ludwig Michelet wrote that "Greek religion culminated with its true god, the sage"; Pierre Hadot develops this idea, stating that "the moment philosophers achieve a rational conception of God based on the model of the sage, Greece surpasses its mythical representation of its gods." Indeed, the actions of the sage are propounded to be how a god would act in the same situation.
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In Plato's Symposium Socrates says the difference between a sage and a philosopher (φιλόσοφος, meaning lover of wisdom) was that the sage has what the philosopher seeks. While analyzing the concept of love, Socrates concludes love is that which lacks the object it seeks. Therefore, the philosopher does not have the wisdom sought, while the sage, on the other hand, does not love or seek wisdom, for it is already possessed. Socrates then examines the two categories of persons who do not partake in philosophy:
Gods and sages, because they are wise;
Senseless people, because they think'' they are wise.
The position of the philosopher is between these two groups. The philosopher is not wise, but possesses the self-awareness of lacking wisdom, and thus pursues it.
Plato is also the first to develop this notion of the sage in various works. Within The Republic, Plato indicates that when a friend of a sage dies, the sage "will not think that for a good man.