The animal's heart is the basis of its life, its chief member, the sun of its microcosm; on the heart all its activity depends, from the heart all its liveliness and strength arise. Equally is the king the basis of his kingdoms, the sun of his microcosm, the heart of the state; from him all power arises and all grace stems.

The animal's heart is the basis of its life, its chief member, the sun of its microcosm; on the heart all its activity depends, from the heart all its liveliness and strength arise. Equally is the king the basis of his kingdoms, the sun of his microcosm, the heart of the state; from him all power arises and all grace stems.

Memory cannot exist without endurance of the things perceived, and the thing perceived cannot remain where it has never been.

Very many maintain that all we know is still infinitely less than all that still remains unknown.

Nature is a volume of which God is the author.

As art is a habit with reference to things to be done, so is science a habit in respect to things to be known.

For the concept of a circuit of the blood does not destroy, but rather advances traditional medicine.