Mind, we found, is born in the form of consciousness when the outside world impresses itself upon the brain-cells by way of the senses. This consciousness, observation and experiment prove, is first a feeling one, later a feeling-thinking-willing one. The mind, then, is really the activity of the brain as it feels, as it thinks, as it wills. We express this in descriptive terms when we speak of mind as the _flow of consciousness_, the sum of all mental associations, conscious and unconscious. For mind is never a final thing. Looking within at our own mental processes we find that always our thought is just becoming something else. We reach a conclusion, but it is not a resting place, only a starting place for another. My thought was _that_ a moment ago, but while it was _that_ it was becoming _this_, and even now it is becoming something else. Thinking is mind. Feeling is mind. Willing is mind. But for the sake of clearness we speak of feeling, thinking, and willing as being functions of mind. Mind acts by using these powers. But to what end does it act? What purpose does it serve? For these functions are not the reasons of being for the mind, even as motion--while the immediate purpose of the locomotive--is not its chief end. The steam engine may stand in the same spot while its wheels revolve madly; it may move along the tracks alone, and accomplish nothing; or it may transport a great train of loaded cars. Unless it moves to some definite point and carries merchandise or people there, it is a useless, indeed, a dangerous invention. We find, in fact, that it functions to the very definite end of taking man and his chattels to specified places. And so it is with the mind. If it is thinking and feeling and willing only for the sake of exercising these mental powers, it might better not be. But what end do we actually find these functions serving? Mind, with its powers of thinking, feeling, and willing, gives an external world of matter; an internal world of thought, and so relates them to each other as to make them serve man's purposes. Thus these functions exist for accomplishment. In the solving of a problem, for instance, the mind thinks, primarily; in the enjoyment of music it feels, primarily, though its feeling may be determined by the intellectual verdict on the music; in forcing its owner to sit at the piano and practice in the face of strong desire to attend the theater, it wills, primarily. Now one of its functions predominates; now another. But the whole mind, not a feeling section, or a thinking section, or a willing section, operates together to produce action. When I play the piano it calls on all my mind. I think the music. I feel it. I make my fingers play it. But the thinking, the feeling, and the willing act together to result in the fingers playing. The mind, then, is an instrument of achievement. It fulfils its purpose when it makes matter serve useful ends.