 In his letter of 15 September 1645 Descartes aims to answer some of her concerns by outlining a set of metaphysical truths knowledge of which will suffice in guiding our practical judgements, including that all things depend on God (who exists), the nature of the human mind and its immortality, and the vast extent of the universe (15 September 1645; AT 4:292). Elisabeth responds by asserting that these considerations just open more problems—of explaining human free will, of how understanding the immortality of the soul can make us seek death, and of distinguishing particular providence from the idea of God—without providing any guidance for evaluating things properly. (See Schmaltz 2019 and Reuter 2021 for interpretations of Elisabeth’s view on free will and divine providence.)