 Neopragmatist thinkers who are more loyal to classical pragmatism include Sidney Hook and Susan Haack (known for the theory of foundherentism).Many pragmatist ideas (especially those of Peirce) find a natural expression in the decision-theoretic reconstruction of epistemology pursued in the work of Isaac Levi.Nicholas Rescher advocates his version of methodological pragmatism, based on construing pragmatic efficacy not as a replacement for truths but as a means to its evidentiation.