Up to this day, there has been no proof of the existence of any intelligence other than the human.

I defy you to find any real will, any reasoning force, outside of life. And everything is there; there is, in the world, no other will than this force which impels everything to life, a life even broader and higher.

If you shut up truth, and bury it underground, it will but grow.

The fate of animals is of greater importance to me than the fear of appearing ridiculous; it is indissolubly connected with the fate of men.

Vines will be planted, corn will spring up, a whole growth of new crops; and people will still fall in love in vintages and harvests yet to come. Life is eternal; it is a perpetual renewal of birth and growth.

People like comfort; that's natural. But as for making money simply for the sake of making it, and giving yourself far more trouble and anxiety to gain it than you can ever get pleasure from it when it's gained, why, as for me, I'd rather sit still and cross my arms.