Passion is vicious when it reasons, admirable only when it springs from the heart and spends itself in sublime impulses that set at naught all selfish considerations.
 Honoré de Balzac, Letters of Two Brides (1841). copy citation

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Author Honoré de Balzac
Source Letters of Two Brides
Topic passion reason
Date 1841
Language English
Reference
Note Translated by R. S. Scott
Weblink http://www.gutenberg.org/files/1941/1941-h/1941-h.htm

Context

“and it is possible that, after all, reason and reflection produce a result not dissimilar from what we call by that name. For what does a woman mean by it but perversion of feeling through calculation? Passion is vicious when it reasons, admirable only when it springs from the heart and spends itself in sublime impulses that set at naught all selfish considerations. Sooner or later, dear one, you too will say, "Yes! dissimulation is the necessary armor of a woman, if by dissimulation be meant courage to bear in silence, prudence to foresee the future." Every married woman learns to her cost the existence of certain social laws, which, in many respects, conflict with the laws of nature.” source