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.

Psychology is the science of the act of experiencing, and deals with the whole system of such acts as they make up mental life.

Both expectations and memories are more than mere images founded on previous experience.

The interval between a cold expectation and a warm desire may be filled by expectations of varying degrees of warmth or by desires of varying degrees of coldness.

The thing of which the act of perception is the perception is experienced as something not mental.

But though cognition is not an element of mental action, nor even in any real sense of the word an aspect of it, the distinction of cognition and conation has if properly defined a definite value.