@article{Bergson, author = {Bergson, Henri}, title = {The two sources of morality and religion, New York 1935}, language = {en} } @article{Bergson, author = {Bergson, Henri}, title = {Introduction to Metaphysics, New York (Library of Liberal Arts) 1949, pp. 21-24, 49-54, 60-62.}, language = {en} } @article{Bergson, author = {Bergson, Henri}, title = {Time and Free Will, New York (Harper Torchbooks) 1960, pp. 219-221, 226-232.}, language = {en} }