PLATO
REPUBLIC, Book 6, Page 485c
Agape in context with Eros, 360 BC
Agape (Greek: αγαπ… or ηγαπ…)
Eros (Greek Ερως or ερως; ερωτικός [erotic])
The original Greek text:
http://www.ac-nice.fr/philo/textes/Platon-Republique/Platon-Republique-5-6.pdf, PLATONOS DE REPUBLICA, Liber V & VI:
The Greek (transliterated) text:
http://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus:text:1999.01.0167&query=section%3D%23717, Plato, Republic, “6.485c” (book 6, p. 485c) (transliterated Greek):
ou monon ge, ô phile, eikos, alla kai pasa anankê ton erôtikôs*(erotic) tou phusei echonta pan to sungenes te kai oikeion tôn paidikôn agapan(agape).
English translations:
http://www.perseus.tufts.edu/cgi-bin/ptext?doc=Perseus:text:1999.01.0168:book=6:section=485c, Plato, Republic: Socrates, “6.485c” (book 6, p. 485c) (English):
“It is not only likely, my friend, but there is every necessity1 that he who is by nature enamored(erotic) of anything should cherish all that is akin and pertaining to the object of his love(agape).”
http://classics.mit.edu/Plato/republic.7.vi.html, The Republic By Plato, “Book VI”:
'May be,' my friend, I replied, is not the word; say rather 'must be affirmed:' for he whose nature is amorous(erotic) of anything cannot help loving all that belongs or is akin to the object of his affections(agape).