The Different Types of Subsistence

There are some things which neither subsist from necessity, nor for the most part, there are some in which a subsistence for the sake of something may take place. Things of this kind, however, when they are produced from accident, are said by us to subsist from fortune. The like also may take place with respect to cause. All cause is definite, but cause according to accident, indefinite,. For an infinite number of things may happen to one thing.