The Tibetan on Quality
Quality, in the last analysis, is neither more nor less than the nature of that awareness, and the response in terms of quality to sentient contact. Through the gradually unfolding mechanism of contact (itself the result of active quality, determining the life of the unit cells which compose the form) the range of contacts extends indefinitely, and the response of the living entity to contact becomes more vital, more understanding in its capacity, and more synthetically comprehended. This response develops in two directions: 
It is this interplay between the consciousness using the mechanisms that confers an understanding of quality. This interplay confers an understanding of the activity underlying the appearance, and motivating it…
The esoteric sciences carry us within the form or forms, and enable us to penetrate to the quality aspect. Students would do well to remember that occultism may be the study of forces, and that the occultist moves in the worlds of force, but these are also the worlds of quality and of those qualifying energies which are seeking to manifest through the world of appearances. As they achieve this, they will dominate the activity of the form units which constitute the phenomenal world. There are energies which lie behind the phenomena produced by the activity of the atomic structures; these are latent and unseen and often unfelt; they are subjective. The esoteric sciences have one purpose in view, and that is to produce the gradual emergence of these energies, so that the skilled occultist can eventually work in a dual yet unified world of force, and be the creative will which guides, blends and utilizes the world of appearances and the realm of qualities. These two types of active creative energies must be controlled by the creating Will or Life aspect so that they function as one.
Therefore the aspirant is taught to turn within; to study motives; to acquaint himself with the qualities which are seeking  expression in the outer world through the medium of his outer mechanism. As he learns to do this, the nature of that outer world of mechanisms alters, and he increasingly becomes aware of the qualities struggling for expression behind the outer forms. Thus the range of his conscious contacts extends, and he passes (through scientific research) from an exoteric understanding of the world of phenomenal appearances to an esoteric comprehension of the world of qualities. Never forget, therefore, that this dual apprehension must be emphasized, and that as a man learns to "know himself," he automatically learns to know the quality underlying all appearances. Look therefore for the quality everywhere. This is what we mean when we speak of seeing divinity on every hand, of recognizing the note sounded by all beings, and of registering the hidden motif of all appearing. The unawakened man or woman sees the form, notes its forms of activity, and "judges by appearances." The awakening aspirant begins to sense some of the beauties that lie unrevealed behind all forms; the awakened disciple lays the focus of his attention upon the emerging world of qualities, and becomes steadily aware of color, of new ranges of sound, of an inner evolving and newer response apparatus which is beginning to enable him to contact the unseen, the intangible, and the unrevealed. He becomes aware of those subjective impulses which condition the quality of the life, and which are slowly and gradually revealing themselves.
From: Bailey, Alice, Esoteric Psychology I, pg 194-196