To completely trust in Allah is to be like a child who knows deeply that even if he does not call for the mother, the mother is totally aware of his condition and is looking after him.
Declare your jihad on thirteen enemies you cannot see - Egoism, Arrogance, Conceit, Selfishness, Greed, Lust, Intolerance, Anger, Lying, Cheating, Gossiping and Slandering. If you can master and destroy them, then will be ready to fight the enemy you can see.
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.
Whatever the situation may be, in the recollection of death there is reward and merit. For even the man engrossed in the world benefits from it by acquiring an aversion to this world, since it spoils his contentment and the fullness of his pleasure; and everything which spoils for man his pleasures and his appetites is one of the means of deliverance.
Remember your contemporaries who have passed away and were your age. Remember the honors and fame they earned, the high posts they held, and the beautiful bodies they possessed. Today all of them are turned to dust. They have left orphans and widows behind them, their wealth is being wasted, and their houses turned into ruins.
No sign of them is left today, and they lie in dark holes underneath the earth.
Picture their faces before your mind's eye and ponder.
Anyone who refuses to marry is shrinking his farmwork, wasting the seed, and leaving idle the appropiate tools created by God; he sins against the purpose of creation and wisdom visible in the evidence of natural structure. The man who refuses to marry has severed a chain of being, a previously unbroken chain linking his own existence to that of Adam.
When you have a bad suspicion about a Muslim in your heart, you should increase your consideration toward him and make dua for him. This way you will infuriate Satan and will be able to drive him away. Because of this, Satan will be reluctant to put evil thoughts into your heart, afraid that you would increase your consideration towards your brother and will make dua for him again.
Men have such a good opinion of themselves, of their mental superiority and intellectual depth; they believe themselves so skilled in discerning the true from the false, the path of safety from those of error, that they should be forbidden as much as possible the perusal of philosophic writings.