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 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.

When we come to images or memories or thoughts, speculation, while always closely related to practice, is more explicit, and it is in fact not immediately obvious that such processes can be described in any sense as practical.

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

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

We cannot therefore say that mental acts contain a cognitive as well as a conative element.

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.