The first edition of "Nature" had prefixed to it the following words
from Plotinus: "Nature is but an image or imitation of wisdom, the last
thing of the soul; Nature being a thing which doth only do, but not
know." This is omitted in after editions, and in its place we read:--

"A subtle chain of countless rings
The next unto the farthest brings;
The eye reads omens where it goes,
And speaks all languages the rose;
And striving to be man, the worm
Mounts through all the spires of form."

The copy of "Nature" from which I take these lines, his own, of course,
like so many others which he prefixed to his different Essays, was
printed in the year 1849, ten years before the publication of Darwin's
"Origin of Species," twenty years and more before the publication of
"The Descent of Man." But the "Vestiges of Creation," published in 1844,
had already popularized the resuscitated theories of Lamarck. It seems
as if Emerson had a warning from the poetic instinct which, when it does
not precede the movement of the scientific intellect, is the first to
catch the hint of its discoveries. There is nothing more audacious in
the poet's conception of the worm looking up towards humanity, than
the naturalist's theory that the progenitor of the human race was an
acephalous mollusk. "I will not be sworn," says Benedick, "but love may
transform me to an oyster." For "love" read science.

Unity in variety, "_il piu nell uno_" symbolism of Nature and its
teachings, generation of phenomena,--appearances,--from spirit, to
which they correspond and which they obey; evolution of the best and