Thoreau writes in his journal:
We accuse savages of worshipping only the bad spirit, or devil, though they may distinguish both a good and a bad; but they regard only that one which they fear and worship the devil only. We too are savages in this, doing precisely the same thing. This occurred to me yesterday as I sat in the woods admiring the beauty of the blue butterfly. We are not chiefly interested in birds and insects, for example, as they are ornamental to the earth and cheering to man, but we spare the lives of the former only on condition that they cat more grubs than they do cherries . . .
P.M.—To Second Division . . .
What is that rush at Second Division? It now forms a dense and very conspicuous mass some four rods long and one foot high. The top for three inches is red, and the impression at a little distance is like that made by sorrel . . .