Lecture II
Therefore, when we examine the act of seeing, which obviously belongs to the head organization, we realize that in the act of seeing there is given ready-made a two-dimensional activity, and in addition we must establish an activity that creates the third dimension—depth. In the action which we have described as representative of the rhythmic system, namely, the free movement of the arms and hands, we can have an inner experience of two spatial dimensions. The third spatial dimension—height—is given to our consciousness in the same way that width and breadth are given for the head organization in the act of seeing. Only in the metabolic-limb system (the connection between these two is only recognized when we study the metabolic activity in the act of walking) is everything open to our consciousness that gives us the full measure of three dimensions.