Oh writer! An Angel watches over all you write. Make your writing meaningful for it will eventually return to you and you will be questioned about what you wrote.
Ali ibn Abi TalibAsceticism is not that you should not own anything, but that nothing should own you.
Ali ibn Abi TalibKnowledge is of two kinds: that which is absorbed and that which is heard. And that which is heard does not profit if it is not absorbed.
Ali ibn Abi Talib