Origin of man now proved. Metaphysics must flourish. He who understand baboon would do more towards metaphysics than Locke. - Charles Darwin

The highest stage in moral culture at which we can arrive, is when we recognise that we ought to control our thoughts.

The comparison here implied between the actions of one of the higher animals and of one so low in the scale as an earth-worm, may appear far-fetched; for we thus attribute to the worm attention and some mental power, nevertheless I can see no reason to doubt the justice of the comparison.

When the principles of breeding and of inheritance are better understood, we shall not hear ignorant members of our legislature rejecting with scorn a plan for ascertaining by an easy method whether or not consanguineous marriages are injurious to man.