But unfortunately Locke treated ideas of reflection as if they were another class of objects of contemplation beside ideas of sensation.

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

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

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

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

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

The perceptive act is a reaction of the mind upon the object of which it is the perception.