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Those who hear and do not understand are like the deaf. Of them the proverb says: "Present, they are absent."

Heraclitus of Ephesus (2017). “Heraclitus on the two antithetical forces in life: Interdependent and mutually convertible aspects of One Cause”, p.6, Philaletheians UK
Those who hear and do not understand are like the deaf. Of them the proverb says: Present, they are absent.