Book 1
6.16
Yes, my son, but just as there are menders of torn garments, so also these physicians whom you mention heal us when we fall sick. But your responsibility for health will be a larger one than that: you must see to it that your army does not get sick at all. And pray what course shall I take, father, said he, that I may be able to accomplish that? In the first place, if you are going to stay for some time in the same neighbourhood, you must not neglect to find a sanitary location for your camp; and with proper attention you can not fail in this. For people are continually talking about unhealthful localities and localities that are healthful; and you may find clear witnesses to either in the physique and complexion of the inhabitants; and in the second place, it is not enough to have regard to the localities only, but tell me what means you adopt to keep well yourself.