There is a vulgar persuasion, that the ignorance of women, by favoring their subordination, ensures their utility. 'Tis the same argument employed by the ruling few against the subject many in aristocracies; by the rich against the poor in democracies; by the learned professions against the people in all countries.

Trust me, there are as many ways of living as there are men, and one is no more fit to lead another, than a bird to lead a fish, or a fish a quadruped.

Persecution for opinion is the master vice of society.

... we have broken down the self-respecting spirit of man with nursery tales and priestly threats, and we dare to assert, that inproportion as we have prostrated our understanding and degraded our nature, we have exhibited virtue, wisdom, and happiness, in our words, our actions, and our lives!

Knowledge signifies things known. Where there are no things known, there is no knowledge. Where there are no things to be known, there can be no knowledge. We have observed that every science, that is, every branch of knowledge, is compounded of certain facts, of which our sensations furnish the evidence. Where no such evidence is supplied, we are without data; we are without first premises; and when, without these, we attempt to build up a science, we do as those who raise edifices without foundations. And what do such builders construct? Castles in the air.

The man possessed of a dollar, feels himself to be not merely one hundred cents richer, but also one hundred cents better, than the man who is penniless; so on through all the gradations of earthly possessions - the estimate of our own moral and political importance swelling always in a ratio exactly proportionate to the growth of our purse.

To give liberty to a slave before he understands its value is, perhaps, rather to impose a penalty than to bestow a blessing.