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

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.

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

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.

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

The different sorts of madness are innumerable.

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