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.

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

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

Thus the same object may supply a practical perception to one person and a speculative one to another, or the same person may perceive it partly practically and partly speculatively.

The thing of which the act of perception is the perception is experienced as something not mental.

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

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