The sculptor Antoine Bourdelle (1861 - 1929) had a great admiration for his master Auguste Rodin (1840 - 1917), twenty years his senior. Bourdelle's talent was recognized by Rodin himself, who saw in that unruly character, "an explorer of the future", a possible heir. Through more than 160 works, including 96 sculptures, 38 drawings, 3 paintings and 26 photographs, the confrontation between master and student shows, with unprecedented ambition and scale, the fraternities and reciprocities, as well as the divergences and antagonisms of two creators, of two plastic universes, bearers of the great challenges of modernity.