Knowledge as venerable estate and clear thought
Nahj al-Balāgha|Volume 1|Book 3|Chapter 5
٥. وَقَالَ (عليه السلام): الْعِلْمُ وِرَاثَةٌ كَرِيمَةٌ وَالْآدَابُ حُلَلٌ مُجَدَّدَةٌ وَالْفِكْرُ مِرْآةٌ صَافِيَةٌ.
5. Amīr al-mu’minīn, peace be upon him, said: Knowledge is a venerable estate; good manners are new dresses; and thinking is clear mirror.