Any man who is intelligent must, on considering that health is of the utmost value to human beings, have the personal understanding necessary to help himself in diseases, and be able to understand and to judge what physicians say and what they administer to his body, being versed in each of these matters to a degree reasonable for a layman.
HippocratesThe function of protecting and developing health must rank even above that of restoring it when it is impaired.
Hippocrates