It is difficult, seeing that there is no such accuracy
in the Art, to hit always on what is most expedient,
and yet many cases occur in medicine which would
require this accuracy, as we shall explain. But on
that account, I say, we ought not to reject the
ancient Art, as if it were not, and had not been
properly founded, because it did not attain accuracy
in all things, but rather, since it is capable of
reaching to the greatest exactitude by reasoning, to
receive it and admire its discoveries, made from a
state of great ignorance, and as having been well
and properly made, and not from chanc