The cleverest minds can become the most foolish, because cleverness is not wisdom. When you draw your identity from what you know, from your credentials, your lineage, your reputation as one of the wise, you have built your sense of self on thought. And thought, however brilliant, cannot reach the truth of who you are.
This is why the celebrated counsellors give brutish counsel. They are cut off from the deeper intelligence that arises only in stillness. Real wisdom is not a possession of the mind. It comes when the mind grows quiet and you meet life directly, so whoever boasts of inherited knowledge has mistaken the noise of thinking for understanding.