Stratz, as befits one who has worked so strenuously in the cause of human health and beauty, admirably sets forth the stage which we have now attained in this matter. After pointing out (_Die Frauenkleidung_, third edition, 1904, p. 30) that, in opposition to the pagan world which worshipped naked gods, Christianity developed the idea that nakedness was merely sexual, and therefore immoral, he proceeds: "But over all glimmered on the heavenly heights of the Cross, the naked body of the Saviour. Under that protection there has gradually disengaged itself from the confusion of ideas a new transfigured form of nakedness made free after long struggle. I would call this _artistic nakedness_, for as it was immortalized by the old Greeks through art, so also among us it has been awakened to new life by art. Artistic nakedness is, in its nature, much higher than either the natural or the sensual conception of nakedness. The simple child of Nature sees in nakedness nothing at all; the clothed man sees in the uncovered body only a sensual irritation. But at the highest standpoint man consciously returns to Nature, and recognizes that under the manifold coverings of human fabrication there is hidden the most splendid creature that God has created. One may stand in silent, worshipping wonder before the sight; another may be impelled to imitate and show to his fellow-man what in that holy moment he has seen. But both enjoy the spectacle of human beauty with full consciousness and enlightened purity of thought." It was not, however, so much on these more spiritual sides, but on the side of hygiene, that the nineteenth century furnished its chief practical contribution to the new attitude towards nakedness. Lord Monboddo, the Scotch judge, who was a pioneer in regard to many modern ideas, had already in the eighteenth century realized the hygienic value of "air-baths," and he invented that now familiar name. "Lord Monboddo," says Boswell, in 1777 (_Life of Johnson_, edited by Hill, vol. iii, p. 168) "told me that he awaked every morning at four, and then for his health got up and walked in his room naked, with the window open, which he called taking _an air-bath_." It is said also, I know not on what authority, that he made his beautiful daughters take an air-bath naked on the terrace every morning. Another distinguished man of the same century, Benjamin Franklin, used sometimes to work naked in his study on hygienic grounds, and, it is recorded, once affrighted a servant-girl by opening the door in an absent-minded moment, thus unattired.