O youth.......be assured that knowledge alone does not strengthen the hand......Though a man read a hundred thousand scientific questions and understood them or learned them, but did not work with them---They do not benefit him except by working.....Knowledge is the tree, and working is its fruit; and though you studied a hundred years and assembled a thousand books, you would not be prepared for the mercy of Allah the Exalted except by working.
Al-GhazaliDo not dispute with anyone in any matter as far as possible. For in argumentation lies much harm and its evil is greater than its benefit.
Al-GhazaliIf those who do not possess knowledge avoid the scholarly discussions, disagreement will end.
Al-GhazaliThere are two kinds of Riya - Showing off-Ostentation ie pure ostentation and adulterated ostention. In pure ostentation "Riya" a man does a good deed only for worldly benefit. In Adulterated ostentation, a man does a good deed with the intention of reaping the benefits of the world as well as of the Hereafter.
Al-GhazaliNever have I dealt with anything more difficult than my own soul, which sometimes helps me and sometimes opposes me.
Al-Ghazali