If ever there was a time when the diet should be of the most simple kind, it is now. Meat should not be placed before our children. Its influence is to excite and strengthen the lower passions and has a tendency to deaden the moral powers. Grains and fruits prepared free from grease, and in as natural a condition as possible, should be the food for the tables of all who claim to be preparing for translation to heaven. The less feverish the diet, the more easily can the passions be controlled. Gratification of taste should not be consulted irrespective of physical, intellectual, or moral health.
(CH 42.2)
Indulgence of the baser passions will lead very many to shut their eyes to the light; for they fear that they will see sins which they are unwilling to forsake. All may see if they will. If they choose darkness rather than light, their criminality will be none the less. Why do not men and women read and become intelligent upon these things, which so decidedly affect their physical, intellectual, and moral strength?—Testimonies for the Church 2:352 (1869).
(CH 42.3)