As the [nineteenth] century progressed, we find that truth itself tended to be regarded no longer as eternal and changeless but as time-dependent. ...This radically new point of view received its extreme formulation in the philosophy of the 'modern Heraclitus', Henri Bergson... for whom ultimate reality was neither 'being' nor 'being changed' but the continual process of 'change' itself, which he called la durée. An authoritative critical account of Bergson's eloquently expressed philosophy... has been given by... Leszek Kolakowski... Bergson achieved the unique distinction of being both scathingly criticized by Bertrand Russel (in 1912) and having his books placed on the by the Holy Office in 1914—the year he was elected a member of the Académie Française! A more scientifically oriented philosophy of change than Bergon's was developed between the wars by... A. N. Whitehead... particularly in his book ...
Henri Bergson