Knowledge 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 TalibKnow you that Allah has made Islam the most sublime path for attainment of His supreme pleasure and the highest standards of his worship and obedience. He has favoured it with noble precepts, exalted principles, undoubtable arguments, unchallengeable supremacy and undeniable wisdom. It is up to you to maintain the eminence and dignity granted to it by the Lord, to follow it sincerely, to do justice to its articles of faith and belief, to obey implicitly its tenets and orders and to give it the proper place in your lives.
Ali ibn Abi Talib