12. Formal Logic I

In formal logic, one must clearly distinguish between perception and sensation. Perception and sensation are two entirely different things. Perception is the first thing we encounter; it must first be dissected in order to have a sensation. However, that which gives us a mental image is not the only thing. The rose, for example, makes an impression on us: red, scent, shape, expanse. When we turn away from the rose, we retain something in our soul, such as a faded remnant of the red, the scent, the expanse, and so on. This faded remnant is the idea. One should not confuse perception and idea. The idea of a thing is where the thing is no longer present. The idea is already a memory image of the perception.