Contact with [menstrual blood] turns new wine sour, crops touched by it become barren, grafts die, seed in gardens are dried up, the fruit of trees fall off, the edge of steel and the gleam of ivory are dulled, hives of bees die, even bronze and iron are at once seized by rust, and a horrible smell fills the air; to taste it drives dogs mad and infects their bites with an incurable poison.
Pliny the ElderThe agricultural population produces the bravest men, the most valiant soldiers,46 and a class of citizens the least given of all to evil designs.
Pliny the ElderLet not things, because they are common, enjoy for that the less share of our consideration.
Pliny the Elder