ي َبدَأُ الأحْمَقُ كَلامَهُ بِالحَماقاتِ، وَيُنهِي كَلامَهُ بِأشْياءَ جُنُونِيَّةٍ.
The beginning of the words of his mouth is foolishness; and the end of his talk is mischievous madness.