Ibn Sina (Avicenna)

The physician should consider the influence of environmental factors on health.

The soul's perfection lies in its assimilation to the Active Intellect.

The universe is a manifestation of God's wisdom and power.

The physician must be ethical and uphold the dignity of the patient.

Medicine is the art of conserving health and eventually of curing the disease that has afflicted the body.

The human intellect at birth is like a tabula rasa, a pure potentiality that is actualized through education and experience.

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.

The majority of diseases are cured by nature itself, without the intervention of the physician.

The physician must be a servant of nature, not an adversary.

A wise physician never relies on a single symptom but considers the totality of signs.

The mind is like a mirror which reflects the forms of things but is not stained by them.

The soul is not a combination of elements, nor is it an accident; it is a substance which gives perfection to a natural body.

The heart is the source of the vital spirit and the seat of the soul's principal faculties.

Sleep is a state in which the senses are withdrawn from their outward functions and are concentrated on the inner world.

Moderation in diet is the most important part of preserving health.

The best wine is that which is old, clear, fragrant, and of a pleasant taste.

Melancholy is the illness of the learned.

The physician must treat not only the disease but the patient as a whole.

There are no incurable diseases, only lack of knowledge.

The stomach is the home of disease, and diet is the principal medicine.