When we walk, we naturally go to the fields and woods: what would become of us, if we walked only in a garden or a mall? Even some sects of philosophers have felt the necessity of importing the woods to themselves, since they did not go to the woods. They planted groves and walks of Plantanes, where they took subdiales ambulationes in porticos open to the air. Of course, it is of no use to direct our steps to the woods, if they do not carry us thither.