Medicine deals with the states of health and disease in the human body. It is a truism of philosophy that a complete knowledge of a thing can only be obtained by elucidating its causes and antecedents, provided, of course, such causes exist. In medicine it is, therefore, necessary that causes of both health and disease should be determined.

That whose existence is necessary must necessarily be one essence.

In God alone, essence (what He is) and existence (that he is) coincide.

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

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

Prayer is that which enables the soul to realize its divinity. Through prayer human beings worship absolute truth, and seek an eternal reward. Prayer is the foundation-stone of religion; and religion is the means by which the soul is purified of all that pollutes it. Prayer is the worship of the first cause of all things, the supreme ruler of all the world, the source of all strength. Prayer is the adoration of the one whose being is necessary.

Leeches should be kept a day before applying them. They should be squeezed to make them eject the contents of their stomachs.