Our whole study of the illusions of perception will serve to show that the one shades off into the other too gradually to allow of our drawing a hard and fast line between them.
Finally, it is to be noted that these last stages of perception bring us near the boundary line which separates objective experience as common and universal, and subjective or variable experience as confined to one or to a few.

In the bringing of the object under a certain class of objects there is clearly room for greater variety of individual perception.

For example, the ability to recognize a man as a Frenchman turns on a special kind of previous experience.

And this transition from the common or universal to the individual experience is seen yet more plainly in the case of individual recognition.

To identify an object, say a particular person, commonly presupposes some previous experience or knowledge of this object, and the existence in the past of some special relation of the recognizer to the recognized, if only that of an observer.