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

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.

Thus the same object may supply a practical perception to one person and a speculative one to another, or the same person may perceive it partly practically and partly speculatively.

Curiosity begins as an act of tearing to pieces or analysis.

For psychological purposes the most important differences in conation are those in virtue of which the object is revealed as sensed or perceived or imaged or remembered or thought.

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.

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