This survival of the fittest which I have here sought to express in mechanical terms, is that which Mr. Darwin has called "natural selection", or the preservation of favoured races in the struggle for life.

In assuming any office besides its essential one, the State begins to lose the power of fulfilling its essential one.

Those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.

Education has for its object the formation of character.

An argument fatal to the communist theory, is suggested by the fact, that a desire for property is one of the elements of our nature.

Whatever fosters militarism makes for barbarism; whatever fosters peace makes for civilization.

We must infer that a plant or animal of any species, is made up of special units, in all of which there dwells the intrinsic aptitude to aggregate into the form of that species: just as in the atoms of a salt, there dwells the intrinsic aptitude to crystallize in a particular way.‎