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

أفضلُ الأدبِ أن يَقِفَ الإنسانُ عند حَدِّه ولا يَتَعدّى‏ قَدْرَهُ.

'The best of manners is for man to stop at his limits and to not exceed his status.'

Source: Ghurar al-Hikam, no. 3241