Vital energy is imparted to the mind through the brain; therefore the brain should never be dulled by the use of narcotics or excited by the use of stimulants. Brain, bone, and muscle, are to be brought into harmonious action, that all may work as well-regulated machines, each part acting in harmony, not one being overtaxed.—Letter 100, 1898. (Te 74.1) MC VC

When those who are in the habit of using tea, coffee, tobacco, opium, or spirituous liquors, are deprived of the accustomed indulgence, they find it impossible to engage with interest and zeal in the worship of God. Divine grace seems powerless to enliven or spiritualize their prayers or their testimonies. These professed Christians should consider the source of their enjoyment. Is it from above, or from beneath?—The Sanctified Life, 25. (Te 74.2) MC VC

Advanced Age of Some Users No Argument—Those who use tea, coffee, opium, and alcohol, may sometimes live to old age, but this fact is no argument in favor of the use of these stimulants. What these persons might have accomplished, but failed to do because of their intemperate habits, the great day of God alone will reveal.—Christian Temperance and Bible Hygiene, 35. (Te 74.3) MC VC

Not All Tempted Alike—Some look with horror upon men who have been overcome with liquor, and are seen reeling and staggering in the street, while at the same time they are gratifying their appetite for things differing in their nature from spirituous liquor, but which injure the health, affect the brain, and destroy their high sense of spiritual things. The liquor drinker has an appetite for strong drink which he gratifies, while another has no appetite for intoxicating drinks to restrain, but he desires some other hurtful indulgence, and does not practice self-denial any more than the drunkard.—Spiritual Gifts 4a:125. (Te 74.4) MC VC