Is there a contradiction at the root of philosophy? Here's what it might be: Philosophy began "in wonder", and asks us to question things -- the roots of our opinions, our beliefs, religions, the essence of objects, the values of life, etc. But it does NOT, emphatically, ask us to question the value of questioning. It ASSUMES (something philosophers should never do!!) that we should question. That seems to me a normative claim never questioned by you philosophers. And even if we WERE to question the value of questioning, we'd be engaging, it seems to me, in an act of performative self-contradiction. We'd still be assuming that we should question!