Ibn Sina (Avicenna)

Every power is weak in proportion to its distance from its source.

The art of medicine is to know the causes of disease and the way to remove them.

Sickness is the result of imbalance in the humors.

The doctor must first heal himself.

Knowledge of the stars is the foundation of medicine.

The human body is a microcosm of the universe.

To enjoy life, we must touch much of it lightly.

The best physicians are those who know the least.

Health is the crown on the well person's head that only the ill person can see.

In medicine, observation is the key to understanding.

The pulse is the voice of the blood.

Fevers are the fire of life.

The mind must be cured as well as the body.

True happiness is found in the pursuit of knowledge.

The surgeon's hand must be steady as the philosopher's mind.

Diseases of the soul are more dangerous than those of the body.

Let food be thy medicine and medicine be thy food.

The eye sees only what the mind is prepared to comprehend.

In healing, patience is the greatest remedy.

The body is the temple of the soul; keep it pure.