Clement of Alexandria

We must then exercise ourselves in taking care about those things which fall under the power of the passions, fleeing like those who are truly philosophers such articles of food as excite lust, and dissolute licentiousness in chambering and luxury; and the sensations that tend to luxury, which are a solid reward to others, must no longer be so to us. For God's greatest gift is self-restraint. For He Himself has said, "I will neyer leave thee, nor forsake thee," as having judged thee worthy according to the true election. Thus, then, while we attempt piously to advance, we shall have put on us the mild yoke of the Lord from faith to faith, one charioteer driving each of us onward to salvation, that the meet fruit of beatitude may be won.

We must join in disciplining ourselves to beware of all that is subject to the passions. We must, like true philosophers, escape from any foods that arouse sexual desire, from a dissolute relaxation in bed, from luxury and all the passions that make for luxury. We realize that others find this a grievous struggle. It is no longer so for us, since self-discipline is God's greatest gift. He has said, "I will never forsake you or abandon you," who have judged you worthy by a decision that is wholly genuine. In this way, as we carefully strive to go to him, the Lord's "easy yoke" will receive us.… There is, according to Hippocrates of Cos, a discipline of the soul as well as of the body, "a state of health which does not shrink from hardship and cannot have enough nourishment."