When we fall in love we begin to imagine romantically, fiercely, wildly, madly, jealously, with possessive, paranoid intensity. And when we imagine strongly, we begin to fall in love with the images conjured before the heart's eye — as when starting a project, preparing a vacation trip, planning a new house in a different city, swelling with pregnancy. . . . Our imaginations draw us ever more fully into the venture. You can't leave the lab, can't stop buying equipment, reading brochures, imagining names. You are in love because of imagination. By freeing imagination, even identical twins are freed of their sameness.
— James Hillman, The Soul's Code