The progress of civilization necessitates the giving of greater and greater attention and intelligence to public affairs. And for this reason I am convinced that we make a great mistake in depriving one sex of voice in public matters, and that we could in no way so increase the attention, the intelligence and the devotion which may be brought to the solution of social problems as by enfranchising our women.

Ch. 21 : Conclusion. - Social Problems (1883)