One’s not half of two; two are halves of one. ― E.E. Cummings
Couples are wholes and not wholes, what agrees disagrees, the concordant is discordant. From all things one and from one all things. —Heraclitus
What greater thing is there for two human souls, than to feel that they are joined for life–to strengthen each other in all labor, to rest on each other in all sorrow, to minister to each other in all pain, to be one with each other in silent unspeakable memories at the moment of the last parting? ― George Eliot, Adam Bede