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- Walt Whitman

A noiseless patient spider,

I mark'd where on a little promontory it stood isolated,

Mark'd how to explore the vacant vast surrounding,

It launch'd forth filament, filament, filament, out of itself,

...

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noun

A polynomial or function with exactly two variables.

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Charles Darwin

Classic Author

Charles Darwin

1809–1882BritishVictorian Science19th Century

Charles Darwin was an English naturalist whose work on evolution by natural selection transformed biology. His research drew on years of observation, including his voyage on HMS Beagle, and reshaped scientific understanding of how species change over time.

Books by Charles Darwin

On the Origin of Species cover1872

On the Origin of Species

Science

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