Introspection finds another great class of conditions in experience, again on the receptive side--conditions which convert the mind from the mere theatre of indifferent changes into the vitally interested, warmly intimate thing which our mental life is to each of us.

This is the sphere of Feeling.

We may see without more ado that while we are receiving sensations and thoughts and suggestions, and acting upon them in the variety of ways already pointed out, we ourselves are not indifferent spectators of this play, this come-and-go of processes.

We are directly implicated; indeed, the very sense of a self, an ego, a me-and-mine, in each consciousness, arises from the fact that all this come-and-go is a personal growth.

The mind is not a mere machine doing what the laws of its action prescribe.