"'Leonardo da Vinci drew cadavers,' Ruth said softly."

Leonardo da Vinci studied anatomy in unprecedented detail, drawing cadavers secretively obtained. The Church forbade the defiling of human corpses and it was a criminal offence that could have lead to a prison sentence.

Leonardo admired the machine-like qualities of the human body, and was fascinated by the function of the muscles, the circulatory system, the eye, and the process of conception and growth of the foetus in the womb.