This Saturday marks the fourth centenary of the death of Juan de Mariana (1536-1624) He was a mentor to Philip III and a precursor of liberalism. His criticism of the arbitrary power of monarchs and his defense of "tyrannicide" made him a global intellectual leader.

Eugène Delacroix thus imagined the impetus for the French Revolution in his painting 'Liberty leading the people' in which a woman represents the French republic. For more information, visit www.louvremuseum.org.