Some houses are furnished expensively, more to gratify pride and to receive visitors than for the comfort, convenience, and health of the family. The best rooms are kept dark. The light and air are shut out lest the light of heaven should injure the rich furniture, fade the carpets, or tarnish the picture frames. When visitors are seated in these rooms they are in danger of taking cold because of the cellarlike atmosphere pervading them. Parlor chambers and bedrooms are kept closed in the same manner and for the same reasons. And whoever occupies these beds which have not been freely exposed to light and air does so at the expense of health, and often of life itself. (CH 57.1) MC VC

Rooms that are not exposed to light and air become damp. Beds and bedding gather dampness, and the atmosphere in these rooms is poisonous, because it has not been purified by light and air.... (CH 57.2) MC VC

Sleeping rooms especially should be well ventilated, and the atmosphere made healthy by light and air. Blinds should be left open several hours each day, and the curtains put aside, and the rooms thoroughly aired. Nothing should remain, even for a short time, which would destroy the purity of the atmosphere.... (CH 57.3) MC VC

Sleeping apartments should be large and so arranged as to have circulation of air through them day and night. Those who have excluded the air from their sleeping rooms should begin to change their course immediately. They should let in air by degrees and increase its circulation until they can bear it winter and summer, with no danger of taking cold. The lungs, in order to be healthy, must have pure air. (CH 57.4) MC VC