The facts will eventually test all our theories, and they form, after all, the only impartial jury to which we can appeal.

The surface of the earth is not simply a stage on which the thousands of present and past inhabitants played their parts in turn. There are much more intimate relations between the earth and the living organisms which populated it, and it may even be demonstrated that the earth was developed because of them.

Embryology furnishes, also, the best measure of true affinities existing between animals.

I hail with joy- for I am a temperance man and a friend of temperance-I hail with joy the efforts that are being made to raise wine in the country. I believe that when you have everywhere cheap, pure, unadulterated wine, you will no longer have need for either prohibitory or license laws.

The study of Nature is intercourse with the Highest Mind.

Philosophers and theologians have yet to learn that a physical fact is as sacred as a moral principle. Our own nature demands from us this double allegiance.

As long as men inquire, they will find opportunities to know more upon these topics than those who have gone before them, so inexhaustibly rich is nature in the innermost diversity of her treasures of beauty, order and intelligence.