Charles Darwin Quotes

As for a future life every man must judge for himself between conflicting vague possibilities.

I have called this principle by which each slight variation if useful is preserved by the term natural selection.

I have called the principle by which each slight variation if useful is preserved by the term of Natural Selection.

We cannot fathom the marvelous complexity of an organic being; but on the hypothesis here advanced this complexity is much increased. Each living creature must be looked at as a microcosm--a little universe, formed of a host of self-propagating organisms, inconceivably minute and as numerous as the stars in heaven.

Englishmen rarely cry, except under the pressure of the acutest grief; whereas in some parts of the Continent the men shed tears much more readily and freely.

Freedom of thought is best promoted by the gradual illumination of men’s minds which follows from the advance of science.

To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.

Nothing at first can appear more difficult to believe than that the more complex organs and instincts should have been perfected, not by means superior to, though analogous with, human reason, but by the accumulation of innumerable slight variations, each good for the individual possessor. Nevertheless, this difficulty, though appearing to our imagination insuperably great, cannot be considered real if we admit the following propositions, namely,— that gradations in the perfection of any organ or instinct, which we may consider, either do now exist or could have existed, each good of its kind,— that all organs and instincts are, in ever so slight a degree, variable,— and, lastly, that there is a struggle for existence leading to the preservation of each profitable deviation of structure or instinct. The truth of these propositions cannot, I think, be disputed.