Genetic endowments of differing -- prestige, shall we say -- have always caused friction, ever since we as a species evolved to the point where we could afford to stop and notice the advantages that our fellows have... and the perceived unfairness of our own shortcomings.
[ he says all of this very blandly, but even now the memories of his own frustrated envy are fresh. why could she do what I could not. ]
...Understanding is, unfortunately, only part of the equation. One must also accept the inequality, learn to bear it without resentment; or, at least, without expressed resentment. The one does not guarantee the other.
And the inequality does not have to be great for the result to be.