Mr. Darwin ... has failed to hold definitely before his mind the principle that the difference of sex, whatever it may consist in, must itself be subject to natural selection and evolution.
Work, alternated with needful rest, is the salvation of man or woman.
If woman's sole responsibility is of the domestic type, one class will be crushed by it, and the other throw it off as a badge of poverty. The poor man's motto, "Women's work is never done," leads inevitably to its antithesis -- ladies' work is never begun.
Every nursing mother, in the midst of her little dependent brood, has far more right to whine, sulk or scold, as temperament dictates, because beefsteak and coffee are not prepared for her and exactly to her taste, than any man ever had or ever can have during the present stage of human evolution.
... you asked me one day if it seemed like giving up much for your sake. Only leave me free, as free as you are and everyone ought to be, and it is giving up nothing.