The Malleus Maleficarum (published in 1487 by Heinrich Kramer and James Sprenger)
“[I]t is necessary for the conservation of the species that the death of one should be the preservation of another. For lions are kept alive by the slaughter of other animals.”
- From The Malleus Maleficarum (Part I, Question 12) by Heinrich Kramer and James Sprenger, translated by Montague Summers (Dover Publications, 1971).
