Ali ibn Abu Talib:
Also imam Ali or caliph Ali.
(Mecca, c. 598 – Kufa, 661).
Cousin and son-in-law of the Islamic prophet Muhammad.
For Sunnis, he was the fourth caliph (656-661) or successor of Muhammad and for Shiites and Alevis he was also the first Imam of the Twelve Imams. They therefore regard his three predecessors as usurpers. Even within Sufism, Ali is considered one of the most important companions of Muhammad, as he was specially taught by the Prophet. He is also called the father of Sufism in many circles.

Two things define you: your patience when you have nothing and your attitude when you have everything.

Sit with the poor and your gratefulness will increase.
