Frases de Avicena

„Un médico ignorante es el ayudante de campo de la muerte.“

—  Avicena

„Dios, el ser supremo, no está circunscrito por el espacio ni tocado por el tiempo; no se puede encontrar en una dirección particular, y su esencia no puede cambiar.“

—  Avicena

„Ahora se establece en las ciencias que no se adquiere conocimiento salvo a través del estudio de sus causas y comienzos, si ha tenido causas y comienzos; ni completado excepto por el conocimiento de sus accidentes y los elementos esenciales que lo acompañan.“

—  Avicena

„An ignorant doctor is the aide-de-camp of death.“

—  Avicenna

As quoted in Familiar Medical Quotations (1968) by Maurice B. Strauss

„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.“

—  Avicenna

"On Medicine, (c. 1020) http://www.fordham.edu/halsall/source/1020Avicenna-Medicine.html
Contexto: 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. Of these causes there are four kinds: material, efficient, formal, and final.

„The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.“

—  Avicenna

"On Medicine, (c. 1020) http://www.fordham.edu/halsall/source/1020Avicenna-Medicine.html
Contexto: 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. Of these causes there are four kinds: material, efficient, formal, and final.

„God, the supreme being, is neither circumscribed by space, nor touched by time; he cannot be found in a particular direction, and his essence cannot change.“

—  Avicenna

As quoted in 366 Readings From Islam (2000), edited by Robert Van der Weyer
Contexto: God, the supreme being, is neither circumscribed by space, nor touched by time; he cannot be found in a particular direction, and his essence cannot change. The secret conversation is thus entirely spiritual; it is a direct encounter between God and the soul, abstracted from all material constraints.

„The world is divided into men who have wit and no religion and men who have religion and no wit.“

—  Avicenna

This was declared without citation to have been attributed to Avicenna in A Rationalist Encyclopaedia : A Book of Reference on Religion, Philosophy, Ethics, and Science (1950), by Joseph McCabe, p. 43; it was also later wrongly attributed to Averroes in The Atheist World‎ (1991) by Madalyn Murray O'Hair, p. 46. It actually originates as a statement by the atheist Al-Maʿarri, earlier translated into English in A Short History of Freethought Ancient and Modern (1906) by John Mackinnon Robertson, Vol. I, Ch. VIII : Freethought under Islam, p. 269, in the form: "The world holds two classes of men ; intelligent men without religion, and religious men without intelligence."
Misattributed

„I [prefer] a short life with width to a narrow one with length.“

—  Avicenna

As quoted in Avicenna (Ibn Sina): Muslim Physician And Philosopher of the Eleventh Century http://books.google.com.bh/books?id=B8k3fsvGRyEC&lpg=PA85&dq=I%20prefer%20a%20short%20life%20with%20width%20to%20a%20narrow%20one%20with%20length&pg=PA85#v=onepage&q=I%20prefer%20a%20short%20life%20with%20width%20to%20a%20narrow%20one%20with%20length&f=false (2006), by Aisha Khan p. 85, which cites Genius of Arab Civilizations by M.A. Martin.

„Medicine considers the human body as to the means by which it is cured and by which it is driven away from health.“

—  Avicenna

As quoted in The Pursuit of Learning in the Islamic World, 610-2003 http://books.google.com.bh/books?id=KTWDxDEY-Q0C&lpg=PA75&dq=Medicine%20considers%20the%20human%20body%20as%20to%20the%20means%20by%20which%20it%20is%20cured%20and%20by%20which%20it%20is%20driven%20away%20from%20health.&pg=PA75#v=onepage&q=Medicine%20considers%20the%20human%20body%20as%20to%20the%20means%20by%20which%20it%20is%20cured%20and%20by%20which%20it%20is%20driven%20away%20from%20health.&f=false (2006), by Hunt Janin, p. 75.

„Those who deny the first principle should be flogged or burned until they admit that it is not the same thing to be burned and not burned, or whipped and not whipped.“

—  Avicenna

Metaphysics, Book I