There are two aspects of life: the unmanifest absolute and the manifest relative creation. Our universe is made of duality, or pairs of opposites: light/dark, male/female, yin/yang, up/down, right/wrong, happiness/sadness. In order for a manifest universe to exist, duality is a prerequisite. However, beyond these pairs of opposites, there is oneness or wholeness, which is the ultimate reality. Some people call it God. Others call it the absolute, infinite, transcendent, the gap, the void, being, awareness, consciousness, the unified field, Brahman, Tao, Yi, nirvana, satori, or satchitananda. This absolute oneness is permanent, immortal, nameless, formless, without beginning, endless, unborn, undying, eternal, and imperishable.

The absolute reality is one. It has no opposite. In the ancient Upanishads it is described as “Only that which is, was in the beginning, one only, without a second.” Among all the creatures in various spheres, humans have a unique ability. They can experience this absolute oneness, and they can merge with this oneness. The experience of oneness is the only reality. There is no permanence and therefore no ultimate reality in the impermanent relative creation. Anything with a name and form is therefore dual and is not that oneness, although it may embody that oneness—as much as anything in relative creation can. Until an enlightened or ascended being merges fully with the absolute and thereby completely individually relinquishes its individuality, it still operates in leshavidya—the faint remains of duality that maintains individuality in an enlightened soul.

Therefore, anything that can speak to you and give you a message, such as divine beings or ascended masters, still lives in the relative world. In contrast, the absolute non-dual reality is silent and does not speak.

from Ascension: Connecting With the Immortal Masters and Beings of Light