A continual change of aspect, the irreversibility of the order of phenomena, the perfect individuality of a perfectly self-contained series: such, then, are the outward characteristics-whether real or apparent is of little moment-which distinguish the living from the merely mechanical.
"Laughter: An Essay on the Meaning of the Comic"
Henri Bergson
Change must be reducible to an arrangement or rearrangement of parts; the irreversibility of time must be an appearance relative to our ignorance; the impossibility of turning back must be only the inability of man to put things in place again.
"Creative Evolution"
Henri Bergson
And it is clear that, if irreversibility in our perceptions were the only irreversibility to which appeal could be made, even Kant would not have supposed that the apprehension of a succession was reached through belief in an irreversibility.
"Kant's Theory of Knowledge"
Harold Arthur Prichard