Saadet Kimyası: Nefsini Bilen Rabbini Bilir

O seeker after the divine mysteries! Know that the door to the knowledge of God will be opened to a person first of all when they know their own soul and understand the truth about their own spirit, according to the saying: "He who knows himself knows his Lord also." Since there is nothing closer to you than yourself, and yet you cannot even distinguish the nature of your own soul and are powerless to truly know yourself, how can you expect to understand anything else? The knowledge which you need to possess is, to know what you are; how you are created; whence you are; for what you are here; whither you are going; in what your happiness consists, and what you must do to secure it; in what your misery consists, and what you must do to avoid it. You need to know what qualities predominate in your character, and in the predominance of which your true happiness consists.