...man. But if variations useful to any organic being do occur, assuredly individuals thus characterized will have the best Chance of being preserved in the...inheritance, they •will tend to produce offspring similarly characterized. This principle of preservation I have called, for the sake of brevity, Natural Selection.'*...

...so many variations have occurred useful to man. But if variations useful to any organic being ever do occur, assuredly individuals thus characterised will have the best chance of being preserved m the struggle for life ; and from the strong principle of inheritance these will tend to produce offspring...