Ali was the cousin and the son-in-law of Muhammad, the prophet of Islam. He ruled as the fourth caliph from 656 to 661, but he is regarded as the rightful immediate successor to prophet Muhammad by the Shia Muslims
Quotes
He who has a thousand friends has not a friend to spare, And he who has one enemy will meet him everywhere.
Do for this life as if you live forever, do for the afterlife as if you die tomorrow.
A man's measure is his will.