The Canon of What We Know
from On Medicine (c. 1020) by Ibn Sina (Avicenna)
translation source The Sacred Books and Early Literature of the East, ed. Charles F. Horne (1917)
"The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes."

Passage:
The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes. Therefore in medicine we ought to know the causes of sickness and health. And because health and sickness and their causes are sometimes manifest, and sometimes hidden and not to be comprehended except by the study of symptoms, we must also study the symptoms of health and disease. Now it is established in the sciences that no knowledge is acquired save through the study of its causes and beginnings, if it has had causes and beginnings; nor completed except by knowledge of its accidents and accompanying essentials.
Ibn Sina (980–1037), known in the West as Avicenna, was a Persian polymath born near Bukhara in present-day Uzbekistan. By the age of eighteen he had mastered medicine, law, and philosophy. His two major works — The Book of Healing, an encyclopedia of science and philosophy, and The Canon of Medicine, a medical textbook used in European universities for six centuries — established him as one of the foundational minds of both Islamic and Western intellectual tradition.

His method was systems thinking before the term existed: the belief that any domain of knowledge, properly understood, reveals the same underlying logic of cause and structure. Applied here, the argument is precise. Culture is not a spontaneous occurrence. It has causes — infrastructure, exchange, the conditions under which people can meet, specialize, and build on one another's work. To treat culture as decoration, as a product of leisure or surplus, is to misread its causes entirely. Avicenna would have called that incomplete knowledge. This series calls it the problem we are trying to solve.