Through a close reading of the two definitions of evil in the Introduction to Responses to Thalassios, this article points out a circular, cognitive-affective-somatic, genetic mechanism that St. Maximos the Confessor considers responsible for the initiation and transmission of the fallness as a human condition and the specific manifestation of it in the form of passions. It elucidates the first definition as mainly phenomenological, by identifying the circular mechanism and its behavioural expressions, and the second definition as more aetiological, by (...) explaining why this mechanism emerges and reemerges with the fallen humanity despite its catastrophic results. CONTRIBUTION: This article highlights a double genetic mechanism that St. Maximos the Confessor grasped within the fallen human condition as a curse solvable only in Christ, a notion largely carved out by previous Maximian scholarship, but fully explained and valuated here. (shrink)