This explanation, valid within its limits, seems to me to fall short of the whole truth. For it fails to reckon with that faculty and that entity within us whose existence we know but cannot explain,--the faculty we call mind, which operates as imagination, and the entity we recognize as spirit or soul. I mean the faculty which gives us the idea of God and the consciousness of self, the faculty which apprehends relations and significance in material transcending their material embodiment. I mean the entity within us which expresses itself in love and aspiration and worship, the entity which is able to fuse with the harmony external to it in a larger unity. When I glance out upon a winter twilight drenching earth and sky with luminous blue, a sudden delight floods in upon me, gathering up all my senses in a surging billow of emotion, and my being pulses and vibrates in a beat of joy. Something within me goes out to meet the landscape; so far as I am at all conscious of the moment, I feel, There, that is what I am! This deep harmony of tone and mass is the expression of a fuller self toward which I yearn. My being thrills and dilates with the sensation of larger life. Then, after the joy has throbbed itself out and my reaction takes shape as consciousness, I set myself to consider the sources and the processes of my experience. I note that my eye has perceived color and form. My intellect, as I summon it into action, tells me that I am looking upon a scene in nature composed of material elements, as land and trees and water and atmosphere. My senses, operating through channels of matter, receive, and my brain registers, impressions of material objects. But this analysis, though defining the processes, does not quite explain _my joy._ I know that beyond all this, transcending my material sense-perception and transcending the actual material of the landscape, there is something in me and there is something in nature which meet and mingle and become one. Above all embodiment in matter, there is a plane on which I feel my community with the world external to me, recognizing that world to be an extension of my own personality, a plane on which I can identify myself with the thing outside of me in so far as it is the expression of what I am or may become. Between me and the external world there is a common term. The effect which nature has upon us is determined, not by the object itself alone and not by our individual mind and temperament alone, but by the meeting of the two, the community between the object and the spirit of man. When we find nature significant and expressive, it is because we make nature in some way a part of our own experience.