Sublime
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Indeed, pursuing pleasure, Seneca warns, is like pursuing a wild beast: On being captured, it can turn on us and tear us to pieces. Or, changing the metaphor a bit, he tells us that intense pleasures, when captured by us, become our captors, meaning that the more pleasures a man captures,
William B. Irvine • A Guide to the Good Life: The Ancient Art of Stoic Joy

thing. And yet human beings either become infatuated with the toy or disrespectfully break it and throw it aside. In this life stay away from all kinds of extremities, for they will destroy your inner balance. Sufis do not go to extremes. A Sufi always remains mild and moderate.
Elif Shafak • The Forty Rules of Love

The remedy against this extreme is to moderate your brilliance. Be extraordinary in your excellence, if you like, but be ordinary in your display of it.
Baltasar Gracian • The Art of Worldly Wisdom (Unabridged Start Publishing LLC)
dissembled about some of their own characteristics
Seneca • On the Shortness of Life (Penguin Great Ideas)
“self-confidence becomes arrogance, assertiveness becomes obstinacy, and self-assurance becomes reckless abandon.” This is the ego, as the writer Cyril Connolly warned, that “sucks us down like the law of gravity.”
Ryan Holiday • Ego Is the Enemy
Become verbally disciplined; don’t show off. Don’t boast. Don’t exaggerate. Just stay inside what you know is true and real.