Cause

The true cause of anything is not its matter but the Form and the Good for which it exists.

There are four causes (material, formal, efficient, and final), and together they give a complete explanation.

Every finite cause points beyond itself; the chain of causes must terminate in a First Cause, God.

There must be at least as much reality in the cause as in the effect, and this leads the mind to God.

Everything follows from God by necessity; causation is identical with logical consequence.

We never observe causation, only constant conjunction, and the mind's habit of expecting one thing after another.

Causality is not derived from experience but is a condition under which experience is possible.

Cause and effect are moments of a reciprocal relation that passes over into the richer category of organic development.

A cause is the sum of conditions, positive and negative, which invariably produce the effect.