The unconscious inhibition that hindered Descartes from investigating this complex of problems more deeply must, in the final analysis, have been his adherence to the Christian définition of evil as a mere privatio boni
Von Franz argues that Descartes's theological inheritance — evil as privation rather than positive force — constitutes the unconscious inhibition blocking genuine engagement with the shadow, the deeper psychic reality the Malin Génie symptomatically gestures toward.
, Dreams: A Study of the Dreams of Jung, Descartes, Socrates, and Other Historical Figures, 1998thesis