“A just city should favor justice and the just, hate tyranny and injustice, and give them both their just deserts.” Quote by Al-Farabi
“When I consider what people generally want in calculating, I found that it always is a number. I also observed that every number is composed of units, and that any number may be divided into units. Moreover, I found that every number which may be expressed from one to ten, surpasses the preceding by one unit: afterwards the ten is doubled or tripled just as before the units were: thus arise twenty, thirty, etc. until a hundred: then the hundred is doubled and tripled in the same manner as the units and the tens, up to a thousand;… so forth to the utmost limit of numeration.” PeopleWantMayFoundNumbersThousandTenLimitsHundredTwentiesAriseThirtyEtcDividedUnitsCalculating Author:Muhammad ibn Musa al-Khwarizmi
“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.” HumansLittlesNationsAnimalSlaveryDumbAttributesSubmissive Author:Ibn Khaldun
“Beyond [known peoples of black West Africa] to the south there is no civilization in the proper sense. There are only humans who are closer to dumb animals than to rational beings. They live in thickets and caves, and eat herbs and unprepared grain. They frequently eat each other. They cannot be considered human beings.” HumansBlackHuman BeingsAnimalKnownCivilizationWestSouthRationalDumbGrainCavesHerbsUnpreparedWest AfricaThickets Author:Ibn Khaldun
“Throughout history many nations have suffered a physical defeat, but that has never marked the end of a nation. But when a nation has become the victim of a psychological defeat, then that marks the end of a nation.” EndsNationsMarkVictimDefeatPsychological Author:Ibn Khaldun
“Businesses owned by responsible and organized merchants shall eventually surpass those owned by wealthy rulers.” ResponsibleOrganizedWealthyRulersMerchants Author:Ibn Khaldun
“All the sciences came to exist in Arabic. The systematic works on them were written in Arabic writing.” WritingWrittenSystematic Author:Ibn Khaldun
“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.” NationsEffortSuccessfulConnectionsGreekAlsTranslators Author:Ibn Khaldun
“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.” FirstsPhilosophyProblemTeacherDisciplineLogicPhilosophicalMethodDetailsGreekIntroduction Author:Ibn Khaldun
“He who finds a new path is a pathfinder, even if the trail has to be found again by others; and he who walks far ahead of his contemporaries is a leader, even though centuries pass before he is recognized as such.” IfsFoundWalksLeaderPathCenturyTrailsNew Paths Author:Ibn Khaldun
“We know that the Zanj (blacks) are the least intelligent and the least discerning of mankind, and the least capable of understanding the consequences of actions.” KnowsActionUnderstandingMankindCapableConsequenceIntelligentDiscerning Author:Al-Jahiz