Ibn Sina (Avicenna)

The soul is a rational substance, and it is capable of abstract thought and reasoning.

The physician should be a lifelong learner, and he should always strive to improve his knowledge and skills.

The greatest good is the pursuit of truth.

The human being is a moral agent, and he is responsible for his actions.

The purpose of art is to express beauty and to inspire the human spirit.

The soul is a free agent, and it has the power to choose between good and evil.

The physician should be a humble person, and he should always acknowledge the limitations of his knowledge.

The greatest victory is to conquer oneself.

The human being is a spiritual being, and he has a natural inclination towards God.

The purpose of education is to cultivate the mind and to develop the character.

Medicine is the art of preserving health and curing disease.

As to the mental essence, we find it in infants devoid of every faculty of judgment.

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

The more perfect a thing is, the more it makes use of its function.

Now, it is necessary that the first mover be the cause of motion in all things.

Medicine considers the human body as to the means of preserving health.

The soul is not in the body, but the body is in the soul.

Happiness is the perfection of human nature.

The physician must be able to diagnose and treat diseases.

Therefore in medicine we ought to know the causes of sickness and health.