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.

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

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

It is convenient to distinguish the two kinds of experience which have thus been described, the experienc-ing and the experienc-ed, by technical words.

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

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