To Rusticus I owe my first apprehensions that my nature needed reform and cure; and that I did not fall into the ambition of the common Sophists, either by composing speculative writings or by declaiming harangues of exhortation in public; further, that I never strove to be admired by ostentation of great patience in an ascetic life, or by display of activity and application; that I gave over the study of rhetoric, poetry, and the graces of language; and that I did not pace my house in my senatorial robes, or practise any similar affectation. I observed also the simplicity of style in his letters, particularly in that which he wrote to my mother from Sinuessa. I learned from him to be easily appeased, and to be readily reconciled with those who had displeased me or given cause of offence, so soon as they inclined to make their peace; to read with care; not to rest satisfied with a slight and superficial knowledge; nor quickly to assent to great talkers. I have him to thank that I met with the discourses of Epictetus, which he furnished me from his own library.
From Apollonius I learned true liberty, and tenacity of purpose; to regard nothing else, even in the smallest degree, but reason always; and always to remain unaltered in the agonies of pain, in the losses of children, or in long diseases. He afforded me a living example of how the same man can, upon occasion, be most yielding and most inflexible. He was patient in exposition; and, as might well be seen, esteemed his fine skill and ability in teaching others the principles of philosophy as the least of his endowments. It was from him that I learned how to receive from friends what are thought favours without seeming humbled by the giver or insensible to the gift.