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Ego may refer to several related concepts:
Ego (Freudian), one of the three constructs in Sigmund Freud's structural model of the psyche
Self-concept, a collection of beliefs about oneself that embodies the answer to "Who am I?"
I (pronoun), the first-person singular nominative case personal pronoun in Modern English
Egoism, an ethical theory that treats self-interest as the foundation of morality
Egotism, the drive to maintain and enhance favorable views of oneself
Ego or EGO may also refer to: Wikipedia