The life and the crystal. Paths into the virtual in Bergson, Simondon and Deleuze

In his analysis of memory, Henri Bergson introduces the key concept of ‘virtuality’, understood as a non- actual reality, an unpredictable and pre-human élan vital. Several years later, the virtual will play a key role in the way that Gilles Deleuze tries to conceive the notion of a ‘plane of immanence’, that is, a whole that guides an inexhaustible process of actualisation. Deleuze, however, refers not only to Bergson but to Gilbert Simondon and to his concept of ‘preindividual field’, which corresponds to a metastable state, full of potential energy, from which a structured process can arise. This article undertakes an analysis of the different theoretical pathways leading to the concept of the virtual in Bergson, Simondon and Deleuze. It will investigate the transformations of this concept by focusing on the memory of the present individuated by Bergson, then applied to the cinema of the time- image by Deleuze, and on the figure of the crystal as an emblematic materialisation of the virtual, deeply present in the philosophy of both Deleuze and Simondon. The intention is to show – apart from the inevitable differences ‒ the significant continuity between these three authors, who share a common attempt to build an affirmative ontology of life. Combined Bergsonian and Simondonian influences lead in Deleuze to a metaphysics of becoming, where virtuality is always on the point of actualising itself in percepts, affects and concepts