But unfortunately Locke treated ideas of reflection as if they were another class of objects of contemplation beside ideas of sensation.

The sensory acts are accordingly distinguished by their objects.

Such being the nature of mental life, the business of psychology is primarily to describe in detail the various forms which attention or conation assumes upon the different levels of that life.

Hence, in desiring, the more the enjoyment is delayed, the more fancy begins to weave about the object images of future fruition, and to clothe the desired object with properties calculated to inflame the impulse.

It may be added, to prevent misunderstanding, that when I speak of contemplated objects in this last phrase as objects of contemplation, the act of contemplation itself is of course an enjoyment.

In the perception of a tree we can distinguish the act of experiencing, or perceiving, from the thing experienced, or perceived.

It is convenient to distinguish the two kinds of experience which have thus been described, the experienc-ing and the experienc-ed, by technical words.