“… To the orders of God or muse be obedient.
Don’t be afraid of insult,
don’t demand the laurel wreath.
Slander and praise receive
with equal indifference.
And never argue with a fool.”
This is actually from a poem that Pushkin wrote … not too long before he foolishly engaged in a duel in which he was mortally injured.
In any case, it is still a good piece of advice, one that all of us should heed.