IMAM HASSAN(a.s)

1. He who tries to achieve something through acting disobediently to Allah will miss what he expects and fall in what he fears.

2. Beware of things for which you apologize. The true believer should not make mistakes and should not apologize.
The hypocrite makes mistakes and apologizes everyday.

3. Sitting with the intelligent is a sign of successfulness. Disputation with other than the disbelievers is a sign of ignorance.
A sign of a scholar is his self-criticism of his sayings and his acquaintance with the various hypotheses.

4. The true stingy is that who refrains from greeting.