If a man lose his balance, and immerse himself in any trades or pleasures for their own sake, he may be a good wheel or pin, but he is not a cultivated man.

To the attentive eye, each moment of the year has its own beauty, and in the same fields, it beholds, every hour, a picture which was never seen before, and which shall never be seen again.

We know more from nature than we can at will communicate.

Nature is what you may do. There is much you may not do.

When God lets loose a great thinker on this planet, then all things are at risk. There is not a piece of science but its flank may be turned to-morrow; nor any literary reputation or the so-called eternal names of fame that many not be refused and condemned.

We can only obey our own polarity.

Nature is an endless combination and repetition of a very few laws. She hums the old well-known air through innumerable variations.