We may now consider what Yoga really is. Let us go for a moment into the nature of Conciousness with the tail of an eye on such sciences as mathematics, biology, and chemistry. In mathematics the expression 'a' plus 'b' plus 'c' is a triviality. Write 'a' plus 'b' plus 'c' equals 0, and you obtain an equation from which the most glorious truths may be developed. In biology the cell divides endlessly, but never becomes anything different; but if we unite cells of opposite qualities, male and female, we lay the foundations of a structure whose summit is unattainably fixed in the heavens of imagination. Similar facts occur in chemistry. The atom by itself has few constant qualities, none of them particularly significant; but as soon as an element combines with the object of its hunger we get not only the ecstatic production of light, heat, and so forth, but a more complex structure having few or none of the qualities of its elements, but capable of further combination into complexities of astonishing sublimity. All these combinations, these unions, are Yoga.
Yoga means Union.
How are we to apply this word to the phenomena of mind? What is the first characteristic of everything in thought? How did it come to be a thought at all? Only by making a distinction between it and the rest of the world. The first proposition, the type of all propositions, is S is P. There must be two things- different things- whose relation forms knowledge.
Yoga is first of all the union of the subject and the object of conciousness: of the seer with the thing seen. - The Equinox vol.III by #aleistercrowley