Meditations 1.8

From Apollonius I learned freedom of will and undeviating steadiness of purpose; and to look to nothing else, not even for a moment, except to reason; and to be always the same, in sharp pains, on the occasion of the loss of a child, and in long illness; and to see clearly in a living example that the same man can be both most resolute and yielding, and not peevish in giving his instruction; and to have had before my eyes a man who clearly considered his experience and his skill in expounding philosophical principles as the smallest of his merits; and from him I learned how to receive from friends what are esteemed favors, without being either humbled by them or letting them pass unnoticed.

Marcus Aurelius, Meditations 1.8, translated by George Long

From Apollonius, self-reliance and an unequivocal determination not to leave anything to chance; and to look to nothing else even for a moment save Reason alone; and to remain ever the same, in the throes of pain, on the loss of a child, during a lingering illness; and to see plainly from a living example that one and the same man can be very vehement and yet gentle: not to be impatient in instructing others; and to see in him a man who obviously counted as the least among his gifts his practical experience and facility in imparting philosophic truths; and to learn in accepting seeming favours from friends not to give up our independence for such things nor take them callously as a matter of course.

Marcus Aurelius, Meditations 1.8, translated by C. R. Haines