 Schiller thus begins, in Letter 11, with an examination of human nature. At the highest level of abstraction, he suggests, we find in humans a distinction between the person and his condition or “the self and its determining attributes” (NA XX, 341/E 115). The self Schiller associates with autonomous personhood, independence, and form; our condition he associates with embodiment, dependence, and matter. These two fundamentally opposed sides do, however, coexist in humans, resulting in the imperative that they be brought into harmony: each person is to “externalize all that is within him and give form to all that is outside him” (NA XX, 344/E 118).