The Zohar, Chapter “Chayei Sarah (The Life of Sarah),” Item 201: “And the dust will return to the earth as it was, and the spirit will return to the God who gave it.” When the Creator created Adam, He took his dust from the place of the Temple and built his body from the four directions of the world. And each of them gave him strength. Afterwards, He poured over him the spirit of life, as it is written, “And breathed into his nostrils the breath of life.” Then he rose and knew that he consisted of above and below, and then he adhered to the Creator and knew the upper wisdom [Hochma].
The four spirits of the world are Hochma, Bina, Tifferet, and Malchut. They are called the four corners of the world, and they are also divided into the right and the left lines: Hochma and Bina; Tifferet is the middle line with Yesod at the end of it, followed by the place of adhesion with Malchut. This is how everything is divided into the right side, left side, and the middle, and the top and the bottom. Such is the structure of our soul, within which we reveal reality.
Even now we reveal our reality within our soul, but we call it our body only because this soul is small, uncorrected, and acts egoistically for the sake of receiving pleasure for itself. But in reality it is the same structure, the same desire, since the Creator only created one desire and not several. However, it is merely revealed to us to a very small extent, in a very uncorrected, tiny form. What we perceive within it is called “this world.” We must reveal this desire, make it bigger, change it slightly, and make it similar to the Light. Then, in it, we will perceive the soul or life in the future world.