In less than eight years "The Origin of Species" has produced conviction in the minds of a majority of the most eminent living men of science. New facts, new problems, new difficulties as they arise are accepted, solved, or removed by this theory; and its principles are illustrated by the progress and conclusions of every well established branch of human knowledge.

Civilisation has ever accompanied emigration and conquest - the conflict of opinion, of religion, or of race

I hold with Henry George, that at the back of every great social evil will be found a great political wrong

But naturalists are now beginning to look beyond this, and to see that there must be some other principle regulating the infinitely varied forms of animal life.

In my solitude I have pondered much on the incomprehensible subjects of space, eternity, life and death.

There is a tendency in nature to the continued progression of certain classes of varieties further and further from the original type.

Every species has come into existence coincident both in space and time with a pre-existing closely allied species.