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.

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

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

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

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

An object is not first imagined or thought about and then expected or willed, but in being actively expected it is imagined as future and in being willed it is thought.

Mental life is indeed practical through and through. It begins in practice and it ends in practice.