The sciences of only one nation, the Greeks, have come down to us, because they were translated through Al-Ma'mun's efforts. He was successful in this direction because he had many translators at his disposal and spent much money in this connection.
All the sciences came to exist in Arabic. The systematic works on them were written in Arabic writing.
Eventually, Aristotle appeared among the Greeks. He improved the methods of logic and systematized its problems and details. He assigned to logic its proper place as the first philosophical discipline and the introduction to philosophy. Therefore he is called the First Teacher.
Therefore, the Negro nation are, as a rule, submissive to slavery, because have little human and have attributes that are quite similar to those of dumb animals, as we have stated.