Letter 73 (§4)

“But that other man, upright and pure, who has left the senate and the bar and all affairs of state, that he may retire to nobler affairs, cherishes those who have made it possible for him to do this in security; he is the only person who returns spontaneous thanks to them, the only person who owes them a great debt without their knowledge. Just as a man honours and reveres his teachers, by whose aid he has found release from his early wanderings, so the sage honours these men, also, under whose guardianship he can put his good theories into practice.”