Throughout history, social and economic inequalities have been fueled and justified by different ideologies. French economist Thomas Piketty’s latest book, Capital and Ideology, looks at the advent and fall of these ideologies, and how they could evolve in the future. He recommends five great books to better understand these complex and always-evolving ideas, and their consequences for the world.

How did Napoleon Bonaparte, an upstart Corsican, go on to conquer half of Europe in the 16 years of his rule? Was he a military genius? And was he really that short? Historian Andrew Roberts, author of a bestselling biography of Napoleon, introduces us to the books that shaped how he sees l’Empereur—including little-known sources from those who knew Napoleon personally.

It’s a revolution that still resonates and yet it resists easy interpretation. Lynn Hunt, a leading historian of the French Revolution, tells us what the events of 1789 and later years really meant, and what relevance they have for us today.

For anybody wanting to go into politics a mastery of the French Revolution is an enormous help and a knowledge of history essential, says Peregrine Worsthorne, the columnist and former editor of Britain’s Sunday Telegraph. He recommends the best books on the French Revolution, both for and against.