Girls ought to be active and diligent; nor is that all; they should also be early subjected to restraint. This misfortune, if it really be one, is inseparable from their sex; nor do they ever throw it off but to suffer more cruel evils. They must be subject, all their lives, to the most constant and severe restraint, which is that of decorum: it is, therefore necessary to accustom them early to such confinement, that it may not afterwards cost them too dear; and to the suppression of their caprices, that they may the more readily submit to the will of others. If, indeed, they be fond of being always at work, they should be sometimes compelled to lay it aside. Dissipation, levity, and inconstancy, are faults that readily spring up from their propensities, when corrupted or perverted by too much indulgence. To prevent this abuse, we should teach them, above all things, to lay a due restraint on themselves. The life of a modest woman is reduced, by our absurd institutions, to a perpetual conflict with herself: not but it is just that this sex should partake of the sufferings which arise from those evils it hath caused us.
Jean-Jacques Rousseau, via A Vindication of the Rights of Woman by Mary Wollstonecraft
You can download a copy of the book for free through Project Gutenberg.