Anger
Al-Sheikh Al-Sadooq through his chain of narrators, narrated from Imam Ali (a.s) that the Messenger of God (s.a.w) said:
The best of the cautious people are those who swallow their anger most.
The lowest of people are those who insult people.
Other Links:
Famous Sayings of Holy Prophet Muhammad (saw) about Imam Ali (as)
Greed
Allah will save me