Currently I’m reading David Ray Griffin’s Whitehead’s Radically Different Postmodern Philosophy after more or less giving up on Stengers’s more playful and imaginative, but tragically francofuzzled, Whitehead introduction. Griffin’s is far more straightforward and clarifying, and that is what I am after.

One of the central ideas in this book is prohibition of philosophical performative contradictions., or as Griffin summarizes it: “…it is antirational to deny in theory ideas that one necessarily presupposes in practice is that one thereby violates the first rule of reason, the law of noncontradiction. It is irrational simultaneously to affirm and deny one and the same proposition. And this is what happens when one denies a hard-core commonsense idea. That is, one is denying the idea explicitly while affirming it implicitly. This point has been made by Karl-Otto Apel and Jürgen Habermas in their critique of “performative contradiction,” in which the very act of performing a speech act contradicts its semantic content, its meaning.”

This reminds me of a passage from Charles Sanders Peirce’s seminal Pragmatist essay “Some Consequences of Four Incapacities Claimed For Man”: “We cannot begin with complete doubt. We must begin with all the prejudices which we actually have when we enter upon the study of philosophy. These prejudices are not to be dispelled by a maxim, for they are things which it does not occur to us can be questioned. Hence this initial skepticism will be a mere self-deception, and not real doubt… Let us not pretend to doubt in philosophy what we do not doubt in our hearts.”

But there are interesting differences between Whitehead’s and Peirce’s objections to skepticism to commonsense beliefs. Whitehead saw self-contradictions, where Peirce saw counterfeit beliefs in the form of theoretical assertions. Both saw a peeling apart of the theoretical snd practical.

My view on this emphasizes the morality of denial: In most of these denials of commonsense I see an attempt at solipsism. Some claim of reality transcending mind is dismantled and reduced to a mental phenomenon that can be accepted or rejected at the discretion of the thinker. This desire to solipsize what is mind-transcendently real is the active ingredient of evil. Life requires small doses of such solipsism to shelter us from the overwhelming dread of infinity, but when philosophies move from emphasis and deemphasis to ontological negation, this should be taken as a possible symptom of autoapotheosis, the desire to mistake ourselves for God, the ultimate failure of philosophy, theology, which manifests itself as ideology.