"The calyx is the marriage bed, the corolla the bed-curtains, the filaments the spermatic vessels, the anthers the testes, the pollen the semen, the pistil the vagina, the ovary the uterus, the ovules …"

"I have seen no one who has been able to distinguish the species of plants better than I have."

"The highest good is to know God and His works."

"The whole system of nature is nothing but a system of sexual generation."

"Man is the masterpiece of creation."