A horse is simply a horse.

An ignorant doctor is the aide-de-camp of death.

I [prefer] a short life with width to a narrow one with length.

Medicine is the science by which we learn the various states of the human body in health and when not in health, and the means by which health is likely to be lost and, when lost, is likely to be restored back to health. In other words, it is the art whereby health is conserved and the art whereby it is restored after being lost. While some divide medicine into a theoretical and a practical [applied] science, others may assume that it is only theoretical because they see it as a pure science. But, in truth, every science has both a theoretical and a practical side.

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; nor completed except by knowledge of its accidents and accompanying essentials.

There are no incurable diseases — only the lack of will. There are no worthless herbs — only the lack of knowledge.

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