1001Philosophers

C. I. Lewis Quotes on Knowledge

Clarence Irving Lewis was an American philosopher and the principal figure of the third generation of American pragmatism. This page collects quotes attributed to C. I. Lewis on the topic of knowledge, drawn from across the philosopher's works.

Quotes

  • Attributed to C. I. Lewis:

    “There can be no a priori knowledge save by way of categorial schemes.”

  • Attributed to C. I. Lewis:

    “Pragmatism is not the rejection of the a priori but the reinterpretation of it.”

  • Attributed to C. I. Lewis:

    “All knowledge of the world is in some way categorical.”

  • Attributed to C. I. Lewis:

    “Values are qualities of experience, open to empirical investigation.”