 Twenty-two volumes of Suárez's works were published, nine of them posthumously under the care of his friend Baltasar Alvarez. Within this corpus most of the philosophical interest has gone to the monumental Disputationes metaphysicae (Metaphysical Disputations, 1597), a work in which Suárez collects and thoughtfully assesses the views of numerous authors, on a vast array of problems, before offering his own solutions; De legibus (1612), where he outlines his natural law theory; and De anima (1621), where he offers a critical exposition of Aristotelian approaches to life and cognition.