This article, published originally in French just after the 1989 release of Jean-Luc Marion's book Reduction and Givenness, consists of a sustained critical study of the manner in which Marion advances from the basic principles of phenomenology. Henry outlines briefly three principles, (1) "so much appearance, so much being," (2) "the principle of principles" of Ideas I, (3) "to the things themselves!" before entering into a lengthy dialogue with Marion's proposal of a fourth principle: "so much reduction, so much givenness." Henry submits each principle to critique, highlighting that they contain confusing premises. Henry is appreciative of Marion's capacity to root the appearing of phenomena in givenness, but he ultimately finds problematic the gap between the call and response that is a fundamental structure of Marion's fourth principle. Henry, in contrast, develops his own theme of pure givenness, expressed in the form of subjectivity he calls auto-affection, in the final pages of the article.