There are three ways to bring unity between two opposites:

The first is by introducing a power that transcends them both, and to which they both utterly surrender their entire being.
They are then at peace with each other because they are both under the influence of the same force.

But they themselves are not at peace—their own being is simply ignored.

The second way is by finding a middle ground where the two meet. The two are at peace where they meet on that middle ground
—but the rest of their territory remains apart and distant.

The third way is to reach deeper, into the very essence of the two beings, and discover that at this point, in every aspect, they are no more than two expressions of the same one G‑d.