Male and female represent the two sides of the great radical dualism. But, in fact, they are perpetually passing into one another. Fluid hardens to solid, solid rushes to fluid. There is no wholly masculine man, no purely feminine woman. History jeers at the attempts of physiologists to bind great original laws by the forms which flow from them. They make a rule; they say from observation what can and cannot be. In vain! Nature provides exceptions to every rule. She sends women to battle, and sets Hercules spinning; she enables women to bear immense burdens, cold, and frost; she enables the man, who feels maternal love, to nourish his infant like a mother. Of late she plays still gayer pranks. Not only she deprives organizations, but organs, of a necessary end. She enables people to read with the top of the head, and see with the pit of the stomach. Presently she will make a female Newton, and a male Syren. Man partakes of the feminine in the Apollo, woman of the Masculine as Minerva. Let us be wise and not impede the soul. Let her work as she will. Let us have one creative energy, one incessant revelation. Let it take what form it will, and let us not bind it by the past to man or woman, black or white. Jove sprang from Rhea, Pallas from Jove. So let it be.

— "The Great Lawsuit" by Margaret Fuller (1843)