Follow your principles as though they were laws. Do not worry if others criticize or laugh at you, for their opinions are not your concern. - Epictetus

Do not worry if others criticize or laugh at you, for their opinions are not your concern.

He didn’t care; it was not his skin he wanted to save, but the man of honour and integrity. These things are not open to compromise or negotiation.

[13] But it sometimes comes about that, when we have properly granted certain premisses, certain conclusions are derived from them that, though false, nonetheless follow from them. [14] What am I to do, then? Accept the false conclusion? [15] And how is that possible? Then should I say that I was wrong to accept the premisses? No, this isn’t permissible either. Or say: That doesn’t follow from the premisses? But that again isn’t permissible. [16] So what is one to do in such circumstances? Isn’t it the same as with debts? Just as having borrowed on some occasion isn’t enough to make somebody a debtor, but it is necessary in addition that he continues to owe the money and hasn’t paid off the loan; likewise, our having accepted the premisses isn’t enough to make it necessary for us to accept the inference, but we have to continue to accept the premisses.

Faced with pain, you will discover the power of endurance. If you are insulted, you will discover patience. In time, you will grow to be confident that there is not a single impression that you will not have the moral means to tolerate.