28 books • 7 series
Bertrand Russell's the Conquest of Happiness: A Modern-Day Interpretation of a Self-Help Classic
Charles Mackay's Extraordinary Popular Delusions and the Madness of Crowds (Infinite Success)
Charles MacKay's Extraordinary Popular Delusions and the Madness of Crowds: A Modern-Day Interpretation of a Finance Classic (52 Brilliant Ideas)
Niccolo Machiavelli's the Prince: A 52 Brilliant Ideas Interpretation (52 Brilliant Ideas: One Good Idea Can Change Your Life)