Modification of form is admitted to be a matter of time

It has been generally the custom of writers on natural history to take the habits and instincts of animals as the fixed point, and to consider their structure and organization as specially adapted to be in accordance with them.

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

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

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

The white men in our colonies are too frequently the savages

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