I eat only what is enough to sustain my life. My food is bread, soup, an egg, and a little meat. And the amount I eat is no more than my body can easily digest.
Those who are slaves to their appetites cannot preserve their reason, their memory, or their senses in their full vigour; for a full belly does not produce a fine mind.
If we could give every individual the right amount of nourishment and exercise, not too little and not too much, we would have found the safest way to health.
There are two sentences inscribed upon the Delphic oracle, hugely accommodated to the usages of man's life: "Know thyself," and "Nothing too much;" and upon these all other precepts depend.
As long as a person exercises, exerts himself greatly, does not eat to the point of being overly full, and keeps his bowels soft, illness will not come upon him and his strength will increase.