stylistic:style_transfer
Part VI: Prerequisites for advancing the investigation of Nature

Descartes begins by obliquely referring to the recent trial of Galileo for heresy and the Church's condemnation of heliocentrism; he explains that for these reasons he has held back his own treatise from publication. However, he says, because people have begun to hear of his work, he is compelled to publish these small parts of it (that is, the Discourse, Dioptrique, Météores, and Géométrie) in order that people not wonder why he doesn't publish.

The discourse ends with some discussion of scientific experimentation: Descartes believes that experimentation is indispensable, time-consuming, and yet not easily delegated to others. He exhorts the reader to investigate the claims laid out in Dioptrique, Météores, and Géométrie and communicate their findings or criticisms to his publisher; he commits to publishing any such queries he receives along with his answers.