"This book is the key text for understanding the development of Bergson's thought from his early treatises on duration to the extension of this concept towards a general cosmology and an ethico-political ontology. In a new critical edition of this crucial work, the original authorised translation by T.E. Hulme has been restored and supplemented with new translations of Bergson's later amendments to the text, a guide to further reading and a new introduction."--Jacket.
