When I considered what people generally want in calculating, I found that it always is a number.
Scientists
Muḥammad ibn Musa al-Khwarizmi
Central Asian mathematician born c. 780 who systematized algebra and gave his name to the word 'algorithm.' His works transmitted Indian numerals to the Islamic and then the European world, transforming mathematics.
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Source: Al-Kitab al-mukhtasar fi hisab al-jabr wal-muqabalaVerified
Muḥammad ibn Musa al-Khwarizmi's Other Quotes
That fondness for science, that affability and condescension which God shows to the learned, that promptitude with which he protects and supports them in the elucidation of obscurities and in the removal of difficulties.
I composed this work to serve as an aid in the calculation of inheritances, legacies, partition, lawsuits, and trade.