Yet when.itcomes to philosophy, there seems to be a currently prevailing prejudice to the effect that, although not everyone who has eyes and fingers, and is given leather and last, is at once in a position to make shoes, everyone nevertheless imme dia understi:lnds how to philosophize, and how to evaluate philosophy, since he possesses the criterion for doing so in his natural reasoo' as if he did not likewise possess the measure for a shoe in his own foot.