"I remember well the moment when I first became aware of the importance of medicinal herbs at Pompeii. It was an early summer morning in 1966 when we went into the insula (city block) across from the amphitheater to clear it of over-growth before beginning our excavations. When my workmen spotted a patch of bright green weeds, they immediately rushed to dig them up and put them with their belongings, to take home at the end of the day ... I thought it very strange, and inquired why they did this. "For fegato," they told me, "it is very good." I was to learn as I worked at Pompeii that liver (fegato) ailments were a common complaint, hence the importance of the medicine made from the herb that my workmen were gathering, the common weed known as mullein ( L.)"