Plants have no legs

“In contrast to most animals, sedentary creatures, like plants or sea anemones, have no legs and cannot move much; for their self-defense, they developed poisons. Examples of such plants are the stinging nettle, the tobacco plant, digitalis, belladonna and poppy; poisons include caffeine, nicotine, and curare. Poisons such as these are at the basis of most medicines. Therefore, most medicines exist essentially because plants have no legs.” - Christoph Schiller