Look for your 'self' and Hume said you'll only ever find individual passing perceptions

David Hume argued that whenever he looked inward for a single, continuous 'self' behind his experiences, he could only ever find a particular perception -- a sight, a feeling, a thought -- never a unified thing having them. He concluded the mind is nothing but a 'bundle' of different perceptions in constant flux, with no single self tying them together.

— David Hume, A Treatise of Human Nature — 1739-40, Book I, Part IV, Section VI
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