For example...

For example, it cannot be said that philosophical concepts are obtained from abstraction and generalization of sensory perceptions, because, as has already been pointed out, there does not exist any sensory or imaginal perceptions equivalent to them. Inquiry into a Problem In order to become clear about the role of sense and intellect in ideas, we shall take a glance at the types of concepts and the way in which they appear.

When we open our eyes to the beautiful scenery of a garden, the different colors of the flowers and leaves attract our attention. Various perceptual forms are pictured in our minds. When we close our eyes, we no longer see the beautiful dazzling colors, and this is the same sensory perception which vanishes when the relation to the external world is cut. However, we can imagine…