A century ago Henri Bergson was a world-wide celebrity. However, after the world wars his philosophy had already fallen into disfavor, disdain and oblivion. Prominent molecular biologists claimed to have hammered the final nail in the coffin of vitalism. Francis Crick himself, with prophetic hubris, called any future vitalist a crank. Things were not much different amongst analytic philosophers who, more concerned with clarity than precision, saw in Bergson’s works hardly more than poetry and mysticism. In fact, ‘vitalism’ became a one-word argument against itself (just utter it and it would count as disproved). And yet, ironically, vitalism refused to die. Half a century ago, Gilles Deleuze wrote a seminal interpretation of Bergson’s philosophy. After providing a concrete articulation of Bergson’s method of intuition, Deleuze studied the progression of Bergson’s concepts of duration, memory, and the élan, and paired them with his own concepts of multiplicity, the virtual and differentiation. Now, in a lucid and crisp book, Craig Lundy unpacks (for the first time) Deleuze’s Bergsonism. Not only does the book afford a better grasp of Bergson’s genius, but it also allows us to trace the origin of some key notions in Deleuze’s philosophy. Moreover, Lundy’s effort is particularly opportune in the context of the current revival of Bergson’s thought. In a time when it is becoming increasingly strenuous to cash the promissory notes of scientific materialism, reductionism and mechanicism, Lundy’s Deleuze’s Bergsonism represents an invaluable opportunity to better understand the philosopher of time and life par excellence.