Ali was a political thinker. In his writings in Nahj-ul-Balagha we come across many passages which project his political thought in the context of Islam. It is surprising that such thoughts expressed fifteen hundred years ago have an air of modernity about them. One marvels at the profundity of his thought.
"When a person dies, his works end, except for three: ongoing charity, knowledge that is benefited from, and a righteous child who prays for him."
Prophet Mohammed (PBUH)
"The best of what a man leaves behind are three: a righteous child who supplicates for him, ongoing charity the reward of which reaches him, and knowledge that is acted upon after him."
Sunan Ibn Mājah
"Every day two angels come down from Heaven and one of them says, 'O Allah! Compensate every person who spends in Your Cause,' and the other (angel) says, 'O Allah! Destroy every miser.'"
Sahih Bukhari