“ As to clever people’s hating each other, I think a little extra talent does sometimes make people jealous. They become irritated by perpetual attempts and failures, and it hurts their tempers and dispositions. Unpretending mediocrity is good, and genius is glorious; but a weak flavor of genius in an essentially common person is detestable. ”
 Oliver Wendell Holmes Sr., The Autocrat of the Breakfast-Table (1858). copy citation

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“Fourthly, that it is an outrage that he is not asked to join them. Here the company laughed a good deal, and the old gentleman who sits opposite said, “That’s it! that’s it!” I continued, for I was in the talking vein. As to clever people’s hating each other, I think a little extra talent does sometimes make people jealous. They become irritated by perpetual attempts and failures, and it hurts their tempers and dispositions. Unpretending mediocrity is good, and genius is glorious; but a weak flavor of genius in an essentially common person is detestable. It spoils the grand neutrality of a commonplace character, as the rinsings of an unwashed wineglass spoil a draught of fair water. No wonder the poor fellow we spoke of, who always belongs to this class of slightly flavored mediocrities, is puzzled and vexed by the strange sight of a dozen men of capacity working and playing together in harmony.” source