Imam Ali (AS) said, ‘Taking lesson [from past faults] results in immunity [from further faults].’[Ghurar al-Hikam, no. 879]

Imam Ali (AS) said, ‘Continuously taking lessons gives rise to the faculty of insight, and brings about self-restraint.’[Ghurar al-Hikam, no. 5150]

Imam Ali (AS) said, ‘He who abundantly and frequently takes lessons [from his experiences] rarely stumbles.’[Ghurar al-Hikam, no.876[