The classic guide to social skills and conversation, still hugely popular; readers value its timeless people principles while noting some dated 1930s examples.
Goodreads — Over a million ratings averaging around 4.2 stars; readers call its advice on listening and empathy enduringly practical.
Wikipedia — Notes it has sold more than 30 million copies and remains one of the best-selling self-help books ever.
Aggregated from public reviews; quotes belong to their authors. As an Amazon Associate, gadzoom.ai earns from qualifying purchases.
Signals behind this ranking
measured Sep 7, 2026
Countable evidence gathered in our research round — not our opinion.
How popular
Amazon ratings106,439
Best Sellers Ranknot measured
New ratings / daynot measured
YouTube reviews found11
Reddit threads foundnot measured
How trusted
Average rating4.7 ★
1–2 star sharenot measured
Independent reviews cited8
Amazon badgenot measured
Also sold bynot measured
These feed a 0–100 score (currently 91.3) that, combined with real visitor clicks, sets this product's position. Signals we could not measure reliably are recorded but excluded from the score.
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