"He who realizes his own deficiencies will spare no pains to reach the highest possible standard of physical, mental, and moral excellence." EGW CT 67

"Those who would not fall prey to Satan's devices must guard the avenues of the soul; they must avoid reading, seeing, or hearing that which will suggest impure thoughts. The mind must not be left to dwell at random every subject that the enemy of the souls may suggest. The heart must be faithfully sentineled, or evils will awaken within, and the soul will wander in darkness." EGW AH pg.402