Hawzah News Agency – Imam al-Ridha peace be upon him says:

مَن اعتَبَرَ أبصَرَ وَ مَن أبصَرَ فَهِمَ، وَ مَن فَهِمَ عَلِمَ.

whoever takes lesson becomes clear-sighted; whoever is clear-sighted understands; and whoever understands becomes wise.

Source: Mizan al-Hikmah, no. 22136