a duplicate, an inner representation of an outward object. The material objects of consciousness (or "objects of intention") exist in their own right, independent and without any residue accumulating in them from our awareness of them. However, the new idea in this essay was that Sartre now differed in also believing that the person's ego itself is also "in the world," an object of consciousness to be discovered, rather than the totally known subject of consciousness. In the novel, not only Roquentin's consciousness but his own body also become objectified in his new, alarming perception. And so Sartre parted company with Husserl over the latter's belief in a transcendent ego, which Sartre believed instead was neither formally nor materially in consciousness, but outside it: in the world. This seemingly technical change fit with Sartre's native predisposition to think of subjectivity as central: a conscious person is always immersed in a world where his or her task is to make himself concrete. A "person" is not an unchanging, central essence, but a fluid construct that continually re-arises as an interaction among a person's consciousness, his physiology and history, the material world, and other people. This view itself supported Sartre's vision of people as fundamentally both doomed and free to live lives of commitment and creativity. Compared to other philosophies La Nausée allows Sartre to explain his philosophy in simplified terms. Roquentin is the classic existentialist hero whose attempts to pierce the veil of perception lead him to a strange combination of disgust and wonder. For the first part of the novel, Roquentin has flashes of Nausea that emanate from mundane objects. These flashes appear seemingly randomly, from staring at a crumpled piece of paper in the gutter to picking up a rock on the beach. The feeling he perceives is pure disgust: a contempt so refined that it almost shatters his mind each time it occurs. As the novel progresses, the Nausea appears more and more frequently, though he is still unsure of what it actually signifies. However, at the base of a chestnut tree in a park, he receives a piercingly clear vision of what the Nausea actually is. Existence itself, the property of existence to be something rather than nothing was what was slowly driving him mad. He no longer sees objects as having qualities such as color or shape. Instead, all words are separated from the thing itself,