This paper faces the problem of the guilt's ambivalence, torn between responsibility and temptation, self-affirmation and strangeness to himself. Following Kierkegaard's and Ricoeur's thinking, we try to sound out this indissoluble polarity by means of analysis of adamitic myth, in which the sinner conscience rationally confesses to itself this terrible experience, the perception of being sinner, wicked, and of being at the same time deceived, victim of a pre-existent and irresistible evil.