There are no incurable diseases — only the lack of will. There are no worthless herbs — only the lack of knowledge.
As to the mental essence, we find it in infants devoid of every mental form.
The different sorts of madness are innumerable.
Width of life is more important than length of life.
The physical signs of measles are nearly the same as those of smallpox, but nausea and inflammation is more severe, though the pains in the back are less.
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.