Mind, Character, and Personality, vol. 2
Body Affects Mind
Close Relationship Between Mind and Body
There is an intimate relation between the mind and the body, and in order to reach a high standard of moral and intellectual attainment, the laws that control our physical being must be heeded.—Patriarchs and Prophets, 601 (1890).
Mental Effort Affected by Physical Vigor
We should seek to preserve the full vigor of all our powers for the accomplishment of the work before us. Whatever detracts from physical vigor weakens mental effort. Hence, every practice unfavorable to the health of the body should be resolutely shunned.
Says the great apostle, “I keep under my body, and bring it into subjection, lest that by any means, when I have preached to others, I myself should be a castaway.” We cannot maintain consecration to God and yet injure our health by the willful indulgence of a wrong habit. Self-denial is one of the conditions, not only of admission into the service of Christ, but of continuance therein. Christ Himself declared, in unmistakable language, the conditions of discipleship: “If any man will come after Me, let him deny himself, and take up his cross, and follow Me.”
Yet, how many who call themselves Christians are unwilling to exercise self-denial, even for Christ’s sake. How often the love for some pernicious indulgence is stronger than the desire for a sound mind in a sound body. Precious hours of probation are spent, God-given means squandered, to please the eye or to gratify the appetite. Custom holds thousands in bondage to the earthly and sensual. Many are willing captives; they desire no better portion.—The Signs of the Times, June 1, 1882.
The Power of Discriminating Between Right and Wrong
Anything that lessens physical strength enfeebles the mind and makes it less capable of discriminating between right or wrong.—Christ’s Object Lessons, 346 (1900).
Mind, Character, and Personality, vol. 2, Page 380 (http://text.egwwritings.org/publication.php?pubtype=Book&bookCode=2MCP&lang=en&collection=2§ion=all&pagenumber=380&QUERY=mental+well+being&resultId=5)