Quotes of All Topics . Occasions . Authors
That whose existence is necessary must necessarily be one essence.
Therefore in medicine we ought to know the causes of sickness and health.
As to the mental essence, we find it in infants devoid of every mental form.
The world is divided into men who have wit and no religion and men who have religion and no wit.
The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.
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.
Mountains have been formed by one [or other] of the causes of the formation of stone, most probably from agglutinative clay which slowly dried and petrified during ages of which we have no record. It seems likely that this habitable world was in former days uninhabitable and, indeed, submerged beneath the ocean. Then, becoming exposed little by little, it petrified in the course of ages.
