Right physical habits promote mental superiority. Intellectual power, physical strength, and longevity depend upon immutable laws. There is no happen-so, no chance, about this matter. Nature’s God will not interfere to preserve men from the consequences of violating nature’s laws. (CG 396.1) MC VC

For Perfect Health Be Temperate in All Things—In order to preserve health, temperance in all things is necessary.... Our heavenly Father sent the light of health reform to guard against the evils resulting from a debased appetite, that those who love purity and holiness may know how to use with discretion the good things He has provided for them, and that by exercising temperance in daily life, they may be sanctified through the truth. (CG 396.2) MC VC

Temperance Precedes Sanctification—God’s people are to learn the meaning of temperance in all things.... All self-indulgence is to be cut away from their lives. Before they can really understand the meaning of true sanctification and of conformity to the will of Christ, they must, by co-operating with God, obtain the mastery over wrong habits and practices. (CG 396.3) MC VC

In Study—Intemperance in study is a species of intoxication; and those who indulge in it, like the drunkard, wander from safe paths and stumble and fall in the darkness. The Lord would have every student bear in mind that the eye must be kept single to the glory of God. He is not to exhaust and waste his physical and mental powers in seeking to acquire all possible knowledge of the sciences, but is to preserve the freshness and vigor of all his powers to engage in the work which the Lord has appointed him in helping souls to find the path of righteousness. (CG 396.4) MC VC