اِذْهَبْ مِنْ قُدَّامِ رَجُلٍ جَاهِلٍ إِذْ لَا تَشْعُرُ بِشَفَتَيْ مَعْرِفَةٍ.
Go from the presence of a foolish man, when thou perceivest not in him the lips of knowledge.