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

واتَّعِظوا بِمَن كانَ قَبلَكُم قَبلَ أن يَتَّعِظَ بِكُم مَن بَعدَكُم.

'Take lesson from [the lives of] those who passed before you, before those who come after you take lesson from you [i.e. your life].'

Source: Nahj al-Balagha, Sermon 32