Complex sentence: Léon Brunschvicg (November 10,1869--January 18,1944) was a French Idealist philosopher who co-founded "Revue de metaphysique et de morale" with Xavier Leon and Ellie Halévy in 1893.
Split into simpler sentences: Léon Brunschvicg (November 10,1869--January 18,1944) was a French Idealist philosopher. He co-founded "Revue de metaphysique et de morale" with Xavier Leon and Ellie Halévy in 1893.