Todo cambio de conformación y función que pueda efectuarse por pequeños grados está bajo el poder de la selección natural; de manera que un órgano qu… - Miguel de Cervantes

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Todo cambio de conformación y función que pueda efectuarse por pequeños grados está bajo el poder de la selección natural; de manera que un órgano que por el cambio de costumbres se ha vuelto inútil o perjudicial para un objeto, puede modificarse y ser utilizado para otro. Un órgano pudo también conservarse para una sola de sus antiguas funciones. Órganos primitivamente formados con el auxilio de la selección natural pueden muy bien, al volverse inútiles, ser variables, pues sus variaciones ya no pueden seguir siendo refrenadas por la selección natural.

Spanish
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About Miguel de Cervantes

Miguel de Cervantes Saavedra (29 September 1547 – 23 April 1616) was a Spanish novelist, poet and playwright. He is most famous for his novel Don Quixote, or Don Quijote de la Mancha, which is considered by many to be the first modern novel, one of the greatest works in Western literature, and the greatest of the Spanish language.

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Additional quotes by Miguel de Cervantes

Remember everything and do not miss a detail of how she receives you: if her color changes as you give her my message; if she becomes agitated or troubled when she hears my name; if she moves about on her pillows, if you happen to find her in the richly furnished antechamber of her rank; if she is standing, look at her to see if she shifts from one foot to another; if she repeats her answer two or three times; if she changes from gentle to severe, from harsh to loving; if she raises her hand to her hair to smooth it, although it is not disarranged; finally, my friend, observe all her actions and movements, because if you relate them to me just as they occurred, I shall interpret what she keeps hidden in the secret places of her heart in response to the fact of my love; for you must know, Sancho, if you do not know it already, that with lovers, the external actions and movements, revealed only when the topic of their love arises, are reliable messengers bringing the news of what transpires deep within their souls.

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