Rene Descartes Quotes About Uncertainty

Quotes about: Uncertainty

• When I consider this carefully, I find not a single property which with certainty separates the waking state from the dream. How can you be certain that your whole life is not a dream?

  Rene Descartes

  Love, Dream, Ontology

• Although my knowledge grows more and more, nevertheless I do not for that reason believe that it can ever be actually infinite, since it can never reach a point so high that it will be unable to attain any greater increase.

  Rene Descartes

  Believe, Ontology, Logic

  Rene Descartes, Elizabeth Sanderson Haldane, G. R. T. Ross (2003). “Discourse on Method and Meditations”, p.89, Courier Corporation

• Neither the true nor the false roots are always real; sometimes they are imaginary; that is, while we can always imagine as many roots for each equation as I have assigned, yet there is not always a definite quantity corresponding to each root we have imagined.

  Rene Descartes

  Real, Roots, Ontology

• We call infinite that thing whose limits we have not perceived, and so by that word we do not signify what we understand about a thing, but rather what we do not understand.

  Rene Descartes

  Ontology, Limits, Logic

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