1T 555
(Testimonies for the Church Volume 1 555)
For years I have from time to time been shown that the sick should be taught that it is wrong to suspend all physical labor in order to regain health. In thus doing the will becomes dormant, the blood moves sluggishly through the system and constantly grows more impure. Where the patient is in danger of imagining his case worse than it really is, indolence will be sure to produce the most unhappy results. Well-regulated labor gives the invalid the idea that he is not totally useless in the world, that he is, at least, of some benefit. This will afford him satisfaction, give him courage, and impart to him vigor, which vain mental amusements can never do. (1T 555.1) MC VC
The view that those who have abused both their physical and mental powers, or who have broken down in either mind or body, must suspend activity in order to regain health, is a great error. In a very few cases entire rest for a short period may be necessary, but these instances are very rare. In most cases the change would be too great. Those who have broken down by intense mental labor should have rest from wearing thought, yet to teach them that it is wrong and even dangerous for them to exercise their mental powers to a degree leads them to view their condition as worse than it really is. They become still more nervous and are a great trouble and annoyance to those who have the care of them. In this state of mind their recovery is doubtful indeed. (1T 555.2) MC VC