Some say that to refer to any separated self in any way, to be inclined to do anything with one's own will, and to resort to one's own schemes and plans in any emergency, are all forms of polytheism....
The chosen Friend is he who is of God alone, both without and within. He neither acts nor thinks against [the Divine Will]. He does not mix with the desire-nature, forgets his services in the presence of the Master, and cannot do without Him.... He is so filled with Him in all respects—both without and within—that it is impossible for anything else to enter into him.... He loses his desire, will, and all individual qualities, and exists merely through God's Desire and Will. He gets what he wills—not because he wills anything other than what is God's will, but because his will is one with God's. Nay God unfolds His Will in him.—Letter 9.
Lights.
When the mirror of the Heart is cleansed of impurities, it becomes capable of reflecting the supersensuous lights. They appear in the beginning as flashes, but gain in power and volume as the heart becomes purer—manifesting [gradually] as the lamp, the flame, the stars, the moon, and the sun. The forms of flashes arise from ablutions and prayers ...; those of the lamp, the flame and the stars, from the partial purity of the heart; that of the full moon, from its perfect purity; that of the sun, from the Soul reflecting its glory in the perfectly purified heart. A time comes when [the inner light] is a thousand times more luminous than the [external] sun. If [the visions of] the sun and moon are simultaneous, the latter signifies the heart reflecting the light of the Soul, the former the Soul itself. The light of the Soul is formless, but is seen behind a veil distorting the idea into the form of the sun.
Sometimes the Light of the Divine Attributes may cast its reflection in the mirror of the heart according to the purity of the latter.... This Light distinguishes itself by a feeling of bliss in the heart, which shows that it comes from God and not from others. It is hard to describe this bliss. It is said that the Light of the Constructive Attributes is illuminative, but not scorching; that of the Disintegrating Attributes scorching, but not illuminative. This is beyond the comprehension of intellect. Sometimes, when the purity of the heart is complete, the Seer sees the True One within him, if he looks within, the True One without him, if he looks to the universe. When the Divine Light is reflected in the light of the soul, the vision gives bliss. When the Divine Light shines without the media of the soul and the heart, the vision manifests formlessness and infinity, uniqueness and harmony, the basis and support of all existence. Here there is neither rising nor setting, neither right nor left, neither up nor down, neither space nor time, neither far nor near, neither night nor day, neither heaven nor earth. Here the pen breaks, the tongue falters, intellect sinks into nothingness, intelligence and knowledge miss the way in the wilderness of amazement.—Letter 12.
The Unveiling of the Supersensuous.
The essence of the Unveiling lies in coming out of the veils. The seer perceives things not perceived by him before. The "veils" mean hindrances keeping one back from the perfect vision of the Divine Beauty, and consist of the various worlds—according to some, 18,000 in number, according to others, 80,600—all present in the constitution of man. Man has an eye correlated to each world, with which he observes that world during the unveiling. These worlds are included under a twofold division: Light and Darkness, Heaven and Earth, Invisible and Visible, Spiritual and Physical,—each pair expressing the same sense in different words.... When a sincere pilgrim, impelled by his aspiration, turns from the lower nature to follow the Law, and begins to tread the Path under the protection of a Teacher, he unfolds an eye for each of the veils uplifted by him, to observe the conditions of the world before him. First, he unfolds the eye of intellect and comprehends the intellectual mysteries to the extent of the uplifting of the veil. This is called the Intellectual unveiling, and should not be depended on. Most of the philosophers are at this stage and take it as the final goal. This stage transcended, the sincere pilgrim comes to unveil the heart, and perceives various lights. This is called the Perceptual unveiling. Next, he unveils the Secrets; this is the Inspirational unveiling, and the Mysteries of creation and existence are revealed to him. Next, he unveils the Soul; this is the Spiritual unveiling, and he can now view Heaven and Hell, and communicate with the Angels. When the soul is completely cleansed of earthly impurities, and is thoroughly pure, he unveils Infinity and is privileged to gaze at the circle of Eternity, to comprehend instantly both Past and Future, getting rid of the limitations of Space and Time, ... to see both fore and aft ... to read hearts, know events, and tread on water, fire, and air. Such miracles are not to be relied on.... Next comes the Innermost unveiling, enabling the pilgrim to enter the plane of the Divine Attributes.... The Innermost is the bridge between the Divine Attributes and the plane of the Soul, enabling the Soul to experience the Divine vision, and reflect the Divine character. This is called the Unveiling of the Divine Attributes. During this stage, the disciple unfolds esoteric knowledge, revelation from God, His vision, His bliss, real absorption, real existence, or Unity,—according as he unveils the Divine Attributes of intelligence, audition, sight, construction, disintegration, stability, or oneness. Similarly one may think of other qualities.—Letter 13.