FIRST LAW: In every animal... A more frequent and continuous use of any organ gradually strengthens, develops and enlarges that organ... While the permanent disuse of any organ imperceptibly weakens and deteriorates it, and progressively diminishes its functional capacity, until it finally disappears.
SECOND LAW: All the acquisitions or losses wrought by nature in individuals... Are preserved by reproductions to the new individuals which arise.
There are no other quotes by this person in the Bon Mots database.
There are no other quotes from this source in the Bon Mots database.
Authentication Score 3
More information on Authentication Score coming soon.
Original Citation
Lamarck, Jean-Baptiste. Philosophie zoologique [Zoological Philosophy]. Paris: Musee d'Histoire Naturelle, 1809, pt. 1, ch. 7.
Original citation text copied to clipboard.
Current Citation
Lamarck, Jean-Baptiste. Zoological Philosophy, translated by Hugh Samuel Roger Elliott. Cambridge University Press, 2011, pt. 1, ch. 7.
Current citation text copied to clipboard.