There are, however, some potentates I would kill by any and all means at my disposal. They are Ignorance, Superstition, and Bigotry — the most sinister and tyrannical rulers on earth. Responding to audience questions during a speech in Detroit (1898)
It is a conceded fact that woman is being reared as a sex commodity, and yet she is kept in absolute ignorance of the meaning and importance of sex. Anarchism and Other Essays (1910)