"In setting out the walls of a city the choice of a healthy situation is of the first importance: it should be on high ground, neither subject to fogs nor rains; its aspects should be neither violently hot nor intensely cold, but temperate in both respects"

This quote by Marcus V. Pollio highlights the importance of selecting a healthy area when building the walls of a city. The ideal area ought to be on high ground, away from locations vulnerable to fogs and rains. Additionally, the location ought to have a temperate climate, not too hot or too cold. This is necessary for the health and wellness of the citizens, as severe temperatures can be detrimental to their health. In addition, the area needs to be quickly available, with access to resources such as food, water, and shelter. By picking a healthy place, the city will have the ability to flourish and provide a safe and comfy environment for its citizens.