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.

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

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.

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

The sensory acts are accordingly distinguished by their objects.

You can mark in desire the rising of the tide, as the appetite more and more invades the personality, appealing, as it does, not merely to the sensory side of the self, but to its ideal components as well.

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