وَ قَالَ علی عليه السلام : الْعِلْمُ وِرَاثَةٌ كَرِيمَةٌ وَ الْآدَابُ حُلَلٌ مُجَدَّدَةٌ وَ الْفِكْرُ مِرْآةٌ صَافِيَةٌ
Amir al-mu’minin, peace be upon him, said: Knowledge is a venerable estate; good manners are new dresses; and thinking is a clear mirror