Methodical Doubt

The systematic questioning of all beliefs to establish a firm foundation for knowledge, as Descartes proposes doubting everything that can be doubted, including sensory perceptions and mathematical truths, to find indubitable certainty.

Descartes systematically doubts all beliefs that are not absolutely certain, including sensory perceptions and mathematical truths, to find an indubitable foundation for knowledge.

Descartes resolves to reject as absolutely false any opinion that could be doubted, including sensory perceptions and mathematical truths.

The First Meditation introduces universal doubt as a tool to eliminate prejudice and withdraw the mind from the senses.

Descartes introduces his method of hyperbolic doubt, systematically rejecting any belief that can be doubted in order to find indubitable truths.