Do you know how the naturalist learns all the secrets of the forest, of plants, of birds, of beasts, of reptiles, of fishes, of the rivers and the sea? When he goes into the woods the birds fly before him and he finds none; when he goes to the river bank, the fish and the reptile swim away and leave him alone. His secret is patience; he sits down, and sits still; he is a statue; he is a log.