To the mass of mankind religion of some kind is a necessity

Truth is born into this world only with pangs and tribulations, and every fresh truth is received unwillingly.

As well might it be said that, because we are ignorant of the laws by which metals are produced and trees developed, we cannot know anything of the origin of steamships and railways

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.

To the mass of mankind religion of some kind is a necessity

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.