Ninth-century Baghdad
Philosophy · Mathematics · Music
Al-Kindi was a ninth-century philosopher whose intellectual life centred on Abbasid Baghdad. He worked in a world where scholars were bringing Greek philosophy and science into Arabic. Connected to courtly patrons and a circle of translators, he helped develop the language in which philosophical questions could be discussed in Arabic. His interests extended across mathematics, medicine, optics, astronomy, and music. Much of his writing has been lost.
His openness to knowledge belonged to a larger philosophical project. In On First Philosophy, he explored God as the ultimate source of existence and argued that the world had a beginning. In On the Intellect, he examined the difference between our capacity to understand and the activity of understanding. These were inquiries shaped by the intellectual and religious questions of his time.
He also considered how philosophy might help us live. His writing on sorrow examines loss, disappointed desires, and our dependence on things that cannot remain unchanged. It offers philosophical consolation, although some of its conclusions are demanding and should not be treated as modern psychological advice.
Quotations retain the wording of the cited editions. The explanations are Alrewaq’s editorial readings.
We must not be ashamed to admire the truth or to acquire it, from wherever it comes.
Al-Kindi was defending the value of learning from other cultures. A thought deserves examination because of its substance; accepting something true need not diminish our own identity.
On First Philosophy
Opening section
English wording quoted by Peter Adamson in the Stanford Encyclopedia of Philosophy.
Read the source (opens in a new tab)The aim of the philosopher is … to attain the truth, and as regards his action, to act truthfully
For Al-Kindi, philosophy has both an intellectual purpose and a practical one. It concerns what we understand and how we act.
On First Philosophy
Opening section
Alfred L. Ivry, Al-Kindi’s Metaphysics, 1974.
The ellipsis marks omitted words; this excerpt ends before the original sentence continues.
Read the source (opens in a new tab)be patient with your soul
This advice comes at the end of a difficult argument about divine unity and the universe. He asks his reader to stay with the reasoning patiently.
On Divine Unity and the Finitude of the World’s Body
Paragraph 14 · p. 22
Jon McGinnis and David C. Reisman, Classical Arabic Philosophy, 2007.
A short phrase excerpted from the concluding paragraph. The source link opens the anthology’s proofs as a PDF.
Read the source (opens in a new tab)The cure will not be found for any pain whose causes are not known.
He begins his discussion of sorrow by asking what produces it, especially losing something loved or failing to obtain something desired. The passage introduces his philosophical method: examine the hurt before deciding how to respond. It is not a universal medical claim.
On the Means of Dispelling Sorrows
Paragraph 2 · p. 23
Jon McGinnis and David C. Reisman, Classical Arabic Philosophy, 2007.
The source link opens the anthology’s proofs as a PDF.
Read the source (opens in a new tab)If what we desire is not existent, then we ought to desire what is existent.
Al-Kindi asks us to reconsider desires that keep us attached to what is unavailable. His wider argument favours lasting intellectual goods over unstable possessions. A contemporary reader might ask what remains possible without treating grief as a failure.
On the Device for Dispelling Sorrows
p. 123
Ghada Jayyusi-Lehn, 2002.
Read the source (opens in a new tab)A philosophical treatise concerned with truth and first causes.