I consider those who would prevent the birth of the passions almost as foolish as those who would destroy them, and those who think this has been my object hitherto are greatly mistaken. But should we reason rightly, if from the fact that passions are natural to man, we inferred that all the passions we feel in ourselves and behold in others are natural? Their source, indeed, is natural; but they have been swollen by a thousand other streams; they are a great river which is constantly growing, one in which we can scarcely find a single drop of the original stream. Our natural passions are few in number; they are the means to freedom, they tend to self-preservation. All those which enslave and destroy us have another source; nature does not bestow them on us; we seize on them in her despite.

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