Los peces, los anfibios y los reptiles por un lado y las aves y los mamíferos de sangre caliente por otro, y cada uno de nosotros, llevamos en nuestras venas la corriente salina de nuestra sangre, en la cual el sodio, el potasio y el calcio se hallan en proporciones muy semejantes a las que existen en el agua del mar. Ésta es nuestra herencia desde el día, hace un número incalculable de millones de años, en que un remoto antecesor pasó de la etapa unicelular a la pluricelular y adquirió por vez primera un sistema circulatorio, en el interior del cual corría un fluido casi idéntico al agua del mar.
American marine biologist and conservationist (1907–1964)
Rachel Louise Carson (27 May 1907 – 14 April 1964) was an American marine biologist, writer, and conservationist whose influential book Silent Spring (1962) and other writings are credited with advancing the global environmental movement. The impact of Carson's works are still felt today as our awareness of environmental contaminants continues to grow.
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I would like to say that in Silent Spring I have never asked the reader to take my word. I have given him a very clear indication of my sources. I make it possible for him-indeed I invite him-to go beyond what I report and get the full picture. This is the reason for the 55 pages of references. You cannot do this if you are trying to conceal or distort or to present half truths.
I clearly remember that in the days before Hiroshima I used to wonder whether nature-nature in the broadest context of the word-actually needed protection from man. Surely the sea was inviolate and forever beyond man's power to change it. Surely the vast cycles by which water is drawn up into the clouds to return again to the earth could never be touched. And just as surely the vast tides of life-the migrating birds-would continue to ebb and flow over the continents, marking the passage of the seasons. But I was wrong. Even these things, that seemed to belong to the eternal verities, are not only threatened but have already felt the destroying hand of man.
Writing is a lonely occupation at best. Of course there are stimulating and even happy associations with friends and colleagues, but during the actual work of creation the writer cuts himself off from all others and confronts his subject alone. He* moves into a realm where he has never been before — perhaps where no one has ever been. It is a lonely place, even a little frightening.
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