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

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 sensory acts are accordingly distinguished by their objects.

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 more difficult to designate this form of conation on its practical side by a satisfactory name.

The mental act of sensation which issues in reflex movement is so simple as to defy analysis.

What is the meaning of the togetherness of the perceiving mind, in that peculiar modification of perceiving which makes it perceive not a star but a tree, and the tree itself, is a problem for philosophy