R. Isaac said- When the Holy One, blessed be He, created the world and wanted to reveal the depth out of the hiddenness and the light from within the darkness, they were contained within one another. Therefore out of darkness emerged the light and out of the hiddenness emerged and was revealed the depth. One emerged from the other. . . . And all things were contained one with another, the good inclination and the evil inclination, right and left, Israel and the nations, white and black. All things were dependent on one another.

Translated by Elliot Wolfson in “Light Through Darkness- The Ideal of Human Perfection in the Zohar,” Harvard Theological Review 81 (1988)- 73-95.