According to Osho, the real difference dissolves: the truly wise have transcended the duality of wisdom and foolishness. They carry no answers, no separate knower, and live the mystery in union with the whole, embracing 'ultimate ignorance.' The fool remains in duality, clinging to knowledge or its lack as identity. The wise are neither and both: empty, participatory, and egoless.
A wise person stops trying to know everything and simply becomes one with life, while a fool stays separate, arguing about answers.