Yet, for my part, I was never unusually squeamish; I could sometimes eat a fried rat with a good relish, if it were necessary.

The natural historian is not a fisherman who prays for cloudy days and good luck merely; but as fishing has been styled "a contemplative man's recreation," introducing him profitably to woods and water, so the fruit of the naturalist's observations is not in new genera or species, but in new contemplations still, and science is only a more contemplative man's recreation.

The intellect of most men is barren. They neither fertilize or are fertilized. It is the marriage of the soul with nature that makes the intellect fruitful, that gives birth to imagination...without nature-awakened imagination most persons do not really live in the world, they merely pass through it as they live dull lives of quiet desperation.

There is no ill which may not be dissipated, like the dark, if you let in a stronger light upon it.

No man loses ever on a lower level by magnanimity on a higher.

I would not have every man nor every part of a man cultivated, any more than I would have every acre of earth cultivated: part will be tillage, but the greater part will be meadow and forest, not only serving an immediate use, but preparing a mould against a distant future, by the annual decay of the vegetation which it supports.

This world is but a canvas to our imagination.