Courtesy of Mark English, here are a couple of pics of philosophers clutching their heads: Karl Popper; and Michel Foucault. What's going on there? Are they trying to guide the inner processes? Or to contain the thoughts that might otherwise burst through their skulls? I looked around for other examples of the mode, but was unable to find anything quite the same. A.J. Ayer, P.F. Strawson, Jean-Paul Sartre and John Dewey are all one-handed exponents - content, perhaps, merely to touch the sanctum of thought. Can readers add to this gallery? Further instances of full head-clutching would be welcome.
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