Sultan Al-Mamun dreamed that he saw a man white in color with a ruddy complexion, high forehead, bald, with thick eyebrows, blue eyes, and good looking, sitting on a chair. Al-Ma’mun said: “In my dream I was in front of him, filled with fear of him. I asked, who are you? He replied: Aristotle. And I asked, what is ‘good?’ And the reply came: ‘What is good is in the mind.’”

Now, almost 2,000 years later,