I, who cannot stay in my chamber for a single day without acquiring some rust, and when sometimes I have stolen forth for a walk at the eleventh hour of four o'clock in the afternoon, too late to redeem the day, when the shades of night were already beginning to be mingled with the daylight, have felt as if I had committed some sin to be atoned for.

Who could believe in the prophecies ... that the world would end this summer, while one milkweed with faith matured its seeds.

Simplicity is the law of Nature for man as well as for flowers. When the tapestry (corolla) of the nuptial bed (calyx) is excessive, luxuriant, it is unproductive. The fertile flowers are single, not double.

Economy is a subject which admits of being treated with levity, but it cannot so be disposed of.

The schools begin with what they call the elements, and where do they end?

The stars are the apexes of what triangles!

Nature is a greater and more perfect art, the art of God; though, referred to herself, she is genius; and there is a similarity between her operations and man's art even in the details and trifles. When the overhanging pine drops into the water, by the sun and water, and the wind rubbing it against the shore, its boughs are worn into fantastic shapes, and white and smooth, as if turned in a lathe. Man's art has wisely imitated those forms into which all matter is most inclined to run, as foliage and fruit.