He who carries out one good deed acquires one advocate in his own behalf, and he who commits one transgression acquires one accuser against himself. Repentance and good works are like a shield against calamity.

Humor the sons of the poor, for they give science its splendor.

Hold no man responsible for what he says in his grief.

He that gives should never remember, he that receives should never forget.

God said: you must teach, as I taught, without a fee.

For the sake of peace one may lie, but peace itself should never be a lie.

Customs are more powerful than laws.

Who can protest and does not, is an accomplice in the act.