
So, if created things have no actions productive of effects, it follows that no nature of anything would ever be known through the effect. And thus, all the knowledge of natural science is taken away from us, for the demonstrations in it are chiefly derived from the effect. (Aquinas SCG 3.69.18)
Secondary Causes: Their Relation to the Primary Cause (God)
The Primary Cause (God) is the uncaused cause, the source of all beings and existence. God continues to sustain the universe at every moment to ensure its continued existence and operation.
Secondary Causes like finite living beings and natural forces possess causal powers. For example, fire has the power to heat and a human has to power to make choices and initiate action. Everything must have a cause. A thing’s nature must be caused by another, that is, it is causally dependent on another agent in a chain of causes. Since these agents are dependent, there are accordingly regarded as secondary” causes. This chain of causes operates as an interactive system established by God. However, each “secondary” cause is ultimately dependent on the power of the Primary Cause (God).
What is the relationship between primary cause and secondary cause? The relationship between a craftsman and his tool provides a helpful analogy: The craftsman (God) is the primary cause of the artifact but this does not undermine the genuine role contributed by the tool (secondary cause) in the production of the artifact.
In Defence of Secondary Causation Against Occasionalism
According to occasionalism, created substances do not have intrinsic power of causation to bring about changes or events. There is no secondary causation since all events are directly caused by God. The discussion below defends the necessity of secondary causation by highlighting some weaknesses of occasionalism. Continue reading “In Defence of Secondary Causation Against Occasionalism”