Whenever anyone criticizes or wrongs you, remember they are only doing or saying what they think is right. - Epictetus

We must consider what is the time for singing, what the time for play, and in whose presence: what will be unsuited to the occasion; whether our companions are to despise us, or we to despise ourselves: when to jest, and whom to mock at: and on what occasion to be conciliatory and to whom: in a word, how one ought to maintain one's character in society. Wherever you swerve from any of these principles, you suffer loss at once; not loss from without, but issuing from the very act itself.

Our master is anyone who has the power to implement or prevent the things that we want or don't want. Whoever wants to be free, therefore, should wish for nothing or avoid nothing that is up to other people. Failing that, one is bound to be a slave.

So when someone assents to a false proposition, be sure that they did not want to give their assent, since, as Plato says, ‘Every soul is deprived of the truth against its will.’47 [5] They simply mistook for true something false.