Herman Melville

“ But, though besides this fraternal likeness, all six boys bore a strong cousin-german resemblance to each other; yet, the O'Briens were in disposition quite the reverse of the O'Regans. The former were a timid, silent trio, who used to revolve around their mother's waist, and seldom quit the maternal orbit; whereas, the O'Regans were "broths of boys," full of mischief and fun, and given to all manner of devilment, like the tails of the comets.
Early every morning, Mrs. O'Regan emerged from the steerage, driving her spirited twins before her, like a riotous herd of young steers ”

“ Are not our thumbs twins? A regular Castor and Pollux? And all of our fingers? Are not our arms, hands, legs, feet, eyes, ears, all twins; born at one birth, and as much alike as they possibly can be? ”

“ I never could look at these little fellows without an inexplicable feeling coming over me; and though there was nothing so very remarkable or unprecedented about them, except the singular coincidence of two sisters simultaneously making the world such a generous present; yet, the mere fact of there being twins always seemed curious; in fact, to me at least, all twins are prodigies; and still I hardly know why this should be; for all of us in our own persons furnish numerous examples of the same phenomenon. ”