And when He, the Exalted, mentioned the optional matters and prioritized them because they are a source of trial, and He removed knowledge of them from their possessors, and warned of their consequences by His encompassing knowledge of all things, the meaning of that was that He is the Able, and no one else, and the All-Knowing, and no one else. He then turned to mention the matters of necessity, which are in complete opposition, as a completion of the evidence that He knows what is in the souls without their possessors and others, and that to Him is the end of returning and manifesting. He stops what He wills according to what He desires from the causes that occur by His permission, whether it be laughter or crying, and other matters that oppose them, which if it were not for familiarity with them, a person would conclude that one who is engaged in one of them does not engage in its opposite at all. And when the perceptual influences are attributed to their causes, He emphasized the words in them and said: 'He'—meaning no one else—'made laugh and made cry.' That is, no one knows before the time of laughter or crying that he is laughing or crying, nor that something pleasing or distressing will come to him. And if it were said to him in the state of laughter that after an hour he would cry, he would deny that. And perhaps he would realize what made him cry while he is in laughter, and vice versa.