EGOTIST, n. A person of low taste, more interested in himself than in me.

Ambrose Bierce (1842–1914?) American writer and journalist

“Egotist,” The Cynic’s Word Book (1906)
    (Source)

Included in The Devil's Dictionary (1911). Originally published in the "Devil's Dictionary" column in the San Francisco Wasp (1884-05-17).