Charles Darwin (1809–1882) was an English naturalist and biologist. He was born in Shrewsbury and lived at Down House in Kent from 1842 until his death. He wrote On the Origin of Species (1859), The Descent of Man (1871), and The Expression of the Emotions in Man and Animals (1872).

Darwin's most important book is On the Origin of Species (1859), which sets out his theory of evolution by natural selection. He also wrote The Descent of Man, The Voyage of the Beagle (his travel account), The Expression of the Emotions in Man and Animals, and detailed studies of everything from barnacles to earthworms. On the Origin of Species is his defining work.
It presents Darwin's theory that species change over time and share common ancestors, driven by natural selection: individuals with traits better suited to their environment tend to survive and pass those traits on. Over vast stretches of time, this produces the enormous diversity of life. The book carefully marshals evidence from breeding, geology, and nature to make the case.
Natural selection is the process at the heart of Darwin's theory. Because more organisms are born than can survive, those with traits that give an advantage in their environment are more likely to live and reproduce, passing those traits to their offspring. Over many generations, this gradually shapes and changes species. It is often summarised as 'survival of the fittest,' a phrase Darwin later adopted.
Yes, intensely so. By suggesting that all life, including humans, descended from earlier forms through natural processes, Darwin's theory challenged widely held religious beliefs about creation. It provoked fierce debate in his own time and, in some quarters, still does. Within science, however, evolution became the unifying framework of modern biology.
His writing is clear and methodical but detailed and Victorian in style, building its case example by example, which can feel slow. The core ideas, though, are graspable and fascinating. A modern-English edition helps you follow the reasoning without wading through every technical digression.
Darwin was born in 1809 and died in 1882. He made his famous voyage on HMS Beagle from 1831 to 1836, published On the Origin of Species in 1859, and spent decades gathering evidence and developing his ideas. He is buried in Westminster Abbey, near Isaac Newton.
Darwin's works are in the public domain and freely available. His original Victorian text can be dense and technical. Here you can read a selection free in clear modern English, and read or listen with a membership.
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