I reckon that the journey itself must take more than fifteen, and not a vestige of food shall we find from end to end.

It has all been made away with, partly by ourselves, partly by our foes, so far as they could.

[26] We must collect enough corn, without which one can neither fight nor live: and as for wine, every man must carry just so much as will accustom him to drink water: the greater part of the country will be absolutely devoid of wine, and the largest supply we could take with us would not hold out.

[27] But to avoid too sudden a change and the sickness that might follow, this is what we must do.

We must begin by taking water with our food: we can do this without any great change in our habits.