The use of natural history is to give us aid in supernatural history: the use of the outer creation, to give us language for the beings and changes of the inward creation.
Persons of genius, and those who are most capable of art, are always most fond of nature: as such are chiefly sensible, that all art consists in the imitation and study of nature.
The only thing that one really knows about human nature is that it changes. Change is the one quality we can predicate of it. The systems that fail are those that rely on the permanency of human nature, and not on its growth and development. The error of Louis XIV was that he thought human nature would always be the same. The result of his error was the French Revolution. It was an admirable result.
In the woods too, a man casts off his years, as the snake his slough, and at what period soever of life, is always a child. In the woods, is perpetual youth.
The Laws of Nature are just, but terrible. There is no weak mercy in them. Cause and consequence are inseparable and inevitable. The elements have no forbearance. The fire burns, the water drowns, the air consumes, the earth buries. And perhaps it would be well for our race if the punishment of crimes against the Laws of Man were as inevitable as the punishment of crimes against the Laws of Nature -were Man as unerring in his judgments as Nature.
Man, being the servant and interpreter of Nature, can do and understand so much and so much only as he has observed in fact or thought of the course of nature; beyond this he neither knows anything nor can do anything.
For us who live in cities Nature is not natural. Nature is supernatural. Just as monks watched and strove to get a glimpse of heaven, so we watch and strive to get a glimpse of earth. It is as if men had cake and wine every day but were sometimes allowed common bread.
. . .this prayer I make, Knowing that Nature never did betray The heart that loved her; 't is her privilege, Through all the years of this our life, to lead From joy to joy: for she can so inform The mind that is within us, so impress With quietness and beauty, and so feed With lofty thoughts, that neither evil tongues, Rash judgments, nor the sneers of selfish men, Nor greetings where no kindness is, nor all The dreary intercourse of daily life, Shall e'er prevail against us, or disturb Our cheerful faith, that all which we behold Is full of blessings.