1852 in Thoreau’s Journal:
The birches at a distance appear as a thin green veil—in their expanding leaves.
1856 in Thoreau’s Journal:
Either nature may be changed or man. Some animals, as frogs or musquash are fitted to live in the marsh.
Only a portion of the earth is habitable by man. Is the earth improving or deteriorating in this respect? Does it require to be improved by the hands of man or is man to live more naturally and so more safely?