It will be mentioned, God willing, in the House of Al-An’am and Al-Ala’ of this book, what we have indicated in this speech, for we have made in it that existence is a school and that the Truth, Glory be to Him, is the Lord of this school and the one who delivers lessons therein to the learners, and they are the knowers, and the messengers are the repeaters, and the heirs are the sinners, and they are the repeaters and scholars. What he delivers to the learners in this school, even if they are many, goes back to four categories. One category is given to them with lessons on the scales of speech in words and meanings so that they can distinguish correct from incorrect, even though all of them are correct according to those who know God. Rather, it is called incorrect in view of its opposite or some specific purpose. The second knowledge is the knowledge of purifying the mind. And training thoughts and refining minds, because the master of the school only wants them to know Himself,