"Perspective is as accidental a thing as lighting. It is the sign not of a particular moment in time, but of a particular position in space. It indicates not the situation of the objects, but the situation of a spectator … hence, in the final analysis, perspective is also the sign of an instant, of the instant when a certain man is at a certain point. What is more, like lighting,it alters them, it dissimulates their true form. In fact, it is a law of optics - that is, a physical law.
Certainly, reality shows us those objects mutilated in this way. But in reality, we can change position: a step to the right, a step to the left completes our vision. The knowledge we have of an object is … a complex sum of perceptions. The plastic image does not move: it must be complete at first sight, therefore it must renounce perspective."