Stoic advice not to value people’s praise or criticism doesn’t mean disdaining others.
From Meditations by Marcus Aurelius
What other people think is not your problem
Someone despises me? That’s their problem. I should not do or say anything despicable. Someone hates me? That’s their problem. I should be patient and cheerful with everyone, including them, but ready to show them their mistake — not spitefully, or to show off my own self-control, but in an honest, upright way (11.13).
When you face people’s insults or hatred, look at their souls. Get inside them. Look at what sort of people they are. You’ll realize there’s no need to impress them (9.27). What are their minds like? What evokes their love and admiration? Imagine their souls stripped bare. And their vanity. It’s their conceit to suppose their disdain could harm anyone, or their praise help them (9.34). But you should still be kind to them. They are by nature your friends (9.27).
Do you want praise from people who kick themselves every fifteen minutes, or the approval of people who can’t please themselves? Is it a sign of self-respect to regret nearly everything you do? (8.53)
Listen only to those whose lives conform to nature. And the others? Bear in mind what sort of people they are — both at home and abroad, by night as well as day, and who they spend their time with. Care nothing for the praise of men who don’t even live up to their own standards (3.4).
Take the high road
Take Antoninus as your model: his steadiness in any situation, his sense of reverence, his calm expression, his gentleness, his modesty, the way he put up with unfair criticism without returning it; how he would not listen to gossip, was slow to criticize, immune to rumor and suspicion, devoid of pretense, and not prone to backbiting, cowardice, jealousy, or empty rhetoric (6.30).
Remember that to change your mind and to accept correction are free acts too. The action is yours, based on your own will, your own decision and your own mind (8.16).
Reason & Virtue
I’ve shortened and arranged the quotations for readability. Quotations are from Gregory Hays translation published by Modern Library, a translation by Francis Hutcheson and James Moor and published by the Liberty Fund, Inc, and the Penguin Classics translated by Martin Hammond.