There might have been a hundred or a thousand life-bearing planets, had the course of evolution of the universe been a little different, or there might have been none at all. They would probably add, that, as life and man have been produced, that shows that their production was possible; and therefore, if not now then at some other time, if not here then in some other planet of some other sun, we should be sure to have come into existence; or if not precisely the same as we are, then something a little better or a little worse.

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.

To say that mind is a product or function of protoplasm, or of its molecular changes, is to use words to which we can attach no clear conception

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.

Modification of form is admitted to be a matter of time

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