Famous Avicenna Quotes Explained
Avicenna, known in Arabic and Persian as Ibn Sina, was a Persian polymath of the Islamic Golden Age, regarded as one of the most influential philosophers and physicians of the medieval world. Avicenna (Ibn Sīnā) was the central figure of Islamic philosophy in the Persian east, with major works in metaphysics, logic, and medicine. Below are eight of the most-quoted lines, with notes on their context.
Attributed to Avicenna:
“Medicine is the science by which we learn the various states of the human body in health and not in health, and the means by which health is likely to be lost and, when lost, is likely to be restored.”
What it means
From the opening of the Canon of Medicine (al-Qānūn fī al-Ṭibb), Avicenna's encyclopaedic medical work that served as a standard textbook in European medical schools into the seventeenth century. The line defines medicine as a science of bodily states and their causes — a classification that placed it among the demonstrative arts rather than the crafts.
Attributed to Avicenna:
“The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.”
What it means
From the Book of Healing (Kitāb al-Shifāʾ). Avicenna's principle is Aristotelian: real knowledge is causal knowledge, so a description of a phenomenon is incomplete until the four causes — material, formal, efficient, final — have been identified. The view shaped both Islamic and Latin scholastic conceptions of scientia.
Attributed to Avicenna:
“The world is divided into men who have wit and no religion, and men who have religion and no wit.”
What it means
Attributed to Avicenna in the doxographical tradition. The line is a wry epigrammatic statement of the difficulty Avicenna's own life negotiated: rationalist philosophy and revealed religion were rarely held together as well as he attempted to hold them, and the social cost of each was paid by different sets of contemporaries.
“I prefer a short life with width to a narrow one with length.”
As quoted in Avicenna (Ibn Sina): Muslim Physician And Philosopher of the Eleventh Century (2006), by Aisha Khan p. 85, which cites Genius of Arab Civilizations by M.A. Martin.
What it means
Attributed to Avicenna; reflects the autobiographical fragments preserved by his student al-Jūzjānī. Avicenna's life was famously productive over a short span; the line treats density of accomplishment as the relevant measure of a life rather than length.
Attributed to Avicenna:
“Whoever has, throughout his life, observed the impressions on his soul made by his loves and hatreds, his desires and aversions, will not doubt that the soul is something other than the body.”
What it means
From Avicenna's psychological writings, especially the De Anima portion of the Book of Healing. The soul, for Avicenna, accumulates a stable shape through repeated movements of love and aversion, so introspection over time discloses one's actual moral constitution.
Attributed to Avicenna:
“Be content with what you have, in order to live in peace.”
What it means
Attributed to Avicenna in the wisdom-literature tradition. The line condenses the practical-philosophical thesis that saʿāda (felicity) requires the alignment of desire with what one already possesses; the philosopher who cannot accept his circumstances cannot make use of them.
Attributed to Avicenna:
“He whose soul is at rest needs no more.”
What it means
Attributed to Avicenna and consistent with his account of the soul's perfection. The rest in question is not idleness but the cessation of internal conflict between competing desires; once the soul achieves it, additional external goods do not improve its state.
“An ignorant doctor is the aide-de-camp of death.”
As quoted in Familiar Medical Quotations (1968) by Maurice B. Strauss
What it means
Attributed to Avicenna in the medical-aphorism tradition. The line is a professional reproach: the doctor who has not mastered the science is not merely useless to the patient but harmful, because his interventions accelerate the disease's progress under the guise of treatment.