School of thought

Continental Rationalism

Intellectual current

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Classification

Period
c. 1600-1750 CE
Regions
europe
Domains
Epistemology , Metaphysics

Overview

Continental Rationalism holds that reason, not sensory experience, is the primary source of knowledge. Descartes founded modern philosophy with his method of radical doubt, arriving at the certainty of 'I think, therefore I am.' Spinoza and Leibniz extended rationalist metaphysics in radically different directions — Spinoza toward monism, Leibniz toward pluralism.

Key ideas

  • Cogito Ergo Sum: Descartes's foundational insight: even if an evil demon deceives me about everything, the very act of doubting proves that I, the thinker, must exist.
  • Innate Ideas: The mind possesses ideas not derived from experience — concepts of God, substance, infinity, and mathematical truths are innate, placed in us by God or inherent in reason.
  • Method of Doubt: Systematically doubt everything that can possibly be doubted — only what survives this radical skepticism can serve as a foundation for certain knowledge.

Key figures

Rene Descartes · Baruch Spinoza · Gottfried Wilhelm Leibniz · Nicolas Malebranche

Methods used

Positions held

Influenced by

Reacts to

  • Pyrrhonism

    Descartes' methodic doubt confronted the revived Pyrrhonian skepticism head-on, pushing doubt to its limit to reach an indubitable foundation that would answer it.

Later connections

  • French Enlightenment Influenced by this tradition
  • Kantian Critical Philosophy Influenced by this tradition
  • Spinozism Influenced by this tradition

    Spinoza worked inside Descartes' programme before turning it against him, keeping the geometrical order of demonstration and the appeal to clear and distinct ideas while rejecting the plurality of substances they had been used to defend.

References

  • Stanford Encyclopedia of Philosophy, Early Modern Rationalism
  • Stanford Encyclopedia of Philosophy, Rationalism vs. Empiricism
  • René Descartes, Meditations on First Philosophy, Meditation II
  • Roger Ariew, Descartes and the Late Scholastics (Cornell University Press, 1999)
  • René Descartes, Meditations on First Philosophy, Meditation I; Richard H. Popkin, The History of Scepticism from Savonarola to Bayle (Oxford University Press, 2003)
  • René Descartes, Rules for the Direction of the Mind, Rule III
  • René Descartes, Meditations on First Philosophy, Meditations I–II (AT VII 17–34)
  • Meditations on First Philosophy — Rene Descartes
  • Ethics — Baruch Spinoza
  • Monadology — G. W. Leibniz