This writing noted the point that nature is not the other of modernity but, as such, modern product, looking at Lee Sang literature as a text fully showing the secret recognition of the modern subject and dynamic aspects with which nature coincide. Lee Sang is the modern subject who called nature as an equivalent to a human being. With Lee Sang, at last, the meaning and arrangement of nature comes to begin to be reasoned from the standpoint of modern `knowing`. Especially, the essays that addressed `Seongcheon` experience is a text allowing for review of honest dynamic reaction when a modern individual who escaped from incantation contacts original nature. One of the largest features in Seongcheon experience lies in space representation and Lee Sang`s complex internal consciousness that reappear with heterogeneous emotion and images. First, Lee Sang reads nature by bringing main virtues of modern metaphysics. To Lee Sang, nature means quantification, complanation, a homogenized subject, that is, a model of scientific interpretation. Such recognition as Lee Sang`s originated from viewing the nature of Joseon as a world of `the past` and `self-sufficiency` where creation or a change is popularly used, and ultimately is related with critical reasoning against the traditional flow of Joseon. But Lee Sang already predicted that the modern reading of nature would fail at last. The scientific reading of nature could not but become a kind of misunderstanding. Thus Seongcheon experience is represented with a complex text where horror and attraction, fatigue and worry are coexistent, and furthermore shows a separative world in which reversal of the value of nature and civilization appears. Lee Sang`s attitude showing self-separation is a kind of play. Lee Sang is a producer sneering at his own defeat behind modern mask and conceal himself, not knowing defeat, This is Lee Sang`s wittism.