Thus we have given to man a pedigree of prodigious length, but not, it may be said, of noble quality.

I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection, in order to mark its relation to man's power of selection. But the expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate, and is sometimes equally convenient.

Till facts are grouped & called there can be no prediction. The only advantage of discovering laws is to foretell what will happen & to see bearing of scattered facts.

I cannot see ... evidence of design and beneficence ... There seems to me too much misery in the world.

Great is the power of steady misrepresentation; but the history of science shows that fortunately this power does not long endure.

It is not the most intellectual of the species that survives; it is not the strongest that survives; but the species that survives is the one that is able best to adapt and adjust to the changing environment in which it finds itself.

Not one change of species into another is on record ... we cannot prove that a single species has been changed.