In order to reach essential structures and relationships of structures, abstracting from the concrete and variable is necessary. For Ricœur, the descent into the consideration of concrete man or concrete reflection is a gradual one achieved in steps. Before the passage to concrete reflection he saw the further need for L'homme faillible, which concerns the existential structures of disproportion as the locus of evil in man. He is preoccupied with the question of disproportion and synthesis (HF). It is not simply a question of the synthesis of the objectivity of the object in the subjectivity of the subject for strictly theoretical knowledge in the style of Kant. For Ricœur it is fundamentally a question of the unity of man and especially of his practical and affective synthesis. He extends his perspective as broadly as possible to consider a global view of man, taking the transcendental method as his guideline. From the guidance of this transcendental level he renders problematical the totality of man and extends the method, even on the object, to practical antinomies and their synthesis and then to the affective poles and synthesis.