Therefore, the Negro nation are, as a rule, submissive to slavery, because [Negroes] have little [that is essentially] human and have attributes that are quite similar to those of dumb animals, as we have stated.
Ibn KhaldunAll the sciences came to exist in Arabic. The systematic works on them were written in Arabic writing.
Ibn KhaldunGovernment is an institution which prevents injustice other than such as it commits itself.
Ibn Khaldun