Quote by Giacomo Casanova
I learned very early that our health is always impaired by some excess either of food or abstinence, and I never had any physician except myself.
Summary
This quote suggests that the speaker, who is self-reliant when it comes to their own health, has recognized the importance of moderation in maintaining a healthy lifestyle. They have noticed that both excesses in indulgence and strict abstinence can have detrimental effects on their well-being. By taking personal responsibility for their health and avoiding extremes, they have learned to find balance in their habits, thus rendering the need for external medical intervention unnecessary.