Modification of form is admitted to be a matter of time

There is, I conceive, no contradiction in believing that mind is at once the cause of matter and of the development of individualised human minds through the agency of matter

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

What birds can have their bills more peculiarly formed than the ibis, the spoonbill, and the heron?

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

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.

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.