Hawzah News Agency – The commander of the faithful, Imam Ali peace be upon him says:

مَنْ لم يَصْلُحْ على‏ أدبِ اللَّهِ لم يَصْلُحْ على أدبِ نفسِهِ.

'A man who is not reformed through the etiquette of Allah will not be rehabilitated through his self-discipline.'

Source: Ghurar al-Hikam, no. 9001