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.

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

An expectation is a future object, recognised as belonging to me.

The sensory acts are accordingly distinguished by their objects.

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.

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

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.