Thinker

René Descartes quotes

6 passages in English · 1596–1650 · Rationalism.

Overview

Descartes sought secure foundations for knowledge through methodological doubt and contributed decisively to analytic geometry. Active within the tradition labeled Rationalism, René Descartes worked as a philosopher and mathematician whose influence depends on both teaching and textual transmission. Handbook consensus places the life span at 1596–1650. Where day-level dates are known, they are recorded in the accompanying birth and death fields. Major points of entry include Meditations on First Philosophy, Discourse on Method, Principles of Philosophy. Interpreters still argue about emphasis, authenticity of particular passages, and how far later disciples reshaped the voice associated with René Descartes. The summary follows mainstream reference works rather than sectarian hagiography or purely literary mythmaking. Philological and historical research continues to refine attribution, chronology, and emphasis.

Main ideas

The cogito identifies thinking as indubitable; he distinguished thinking substance from extended substance and defended clear and distinct ideas. Systematically, the teaching links method, mind, mathematics into a practical and theoretical whole. Rather than offering isolated maxims, the arguments specify what counts as knowledge, virtue, or legitimate order and what failures of judgment produce social or spiritual harm. Method matters: dialectic, meditation, demonstration, genealogy, or historical analysis—each school privileges different tools for correcting opinion. Close attention to Meditations on First Philosophy shows how definitions, examples, and counterarguments carry the doctrine. Later schools often radicalized one strand while soft-pedaling another; reconstructing the original balance requires reading across genres and against later orthodoxy. The ideas remain philosophically live because they still organize disputes about freedom, authority, nature, and the good life.

Major works

  • Meditations on First Philosophy
  • Discourse on Method
  • Principles of Philosophy

Legacy

Cartesian rationalism framed modern debates about mind, body, certainty, and scientific method. Reception history carried René Descartes into curricula, religious movements, and public rhetoric far from the original setting of Rationalism. Modern scholarship both demythologizes and renews interest, separating usable arguments from legend. For a quotes-oriented readership, the durable value lies in precise problems and formulations that resist reduction to motivational slogans.

Themes in this archive

Philosophy (2) · Self (1) · Knowledge (1) · Existence (1) · Desire (1)

  1. I think, therefore I am.
  2. Once in a lifetime, everything must be doubted.
  3. The things we conceive very clearly and very distinctly are all true.
  4. Good sense is the best distributed thing in the world.
  5. I am, I exist—whenever it is uttered by me, or conceived in the mind, it is necessarily true.
  6. to change my desires rather than the order of the world