(27 May 1332 - 19 Mar 1406)
Science Quotes by Ibn Khaldûn (2 quotes)
Geometry enlightens the intellect and sets one’s mind right. All of its proofs are very clear and orderly. It is hardly possible for errors to enter into geometrical reasoning, because it is well arranged and orderly. Thus, the mind that constantly applies itself to geometry is not likely to fall into error. In this convenient way, the person who knows geometry acquires intelligence.
— Ibn Khaldûn
Untruth naturally afflicts historical information. There are various reasons that make this unavoidable. One of them is partisanship for opinions and schools … Another reason making untruth unavoidable in historical information is reliance upon transmitters … Another reason is unawareness of the purpose of an event … Another reason is unfounded assumption as to the truth of a thing. … Another reason is ignorance of how conditions conform with reality … Another reason is the fact that people as a rule approach great and high-ranking persons with praise and encomiums … Another reason making untruth unavoidable—and this one is more powerful than all the reasons previously mentioned—is ignorance of the nature of the various conditions arising in civilization. Every event (or phenomenon), whether (it comes into being in connection with some) essence or (as the result of an) action, must inevitably possess a nature peculiar to its essence as well as to the accidental conditions that may attach themselves to it.
— Ibn Khaldûn