The Supreme Principles of Being
It is impossible for a thing to be and not to be at the same time and under the same aspect.
The Principle of Contradiction
A being whose nature it is to exist in itself.
Substance
An absolute accident completing and determining a substance in its being and in its operations.
Quality
The agent and patient are really the same being and there is only between them a logical distinction with a foundation in reality.
Complete being. It is known as ens physicum, physical being.
Actual Being
Everything must have a reason for its being or existence
The Principle of Sufficient Reason
This type of substance is not ordained to form a union with a substantial co-principle.
Complete.
The bearing or reference of one thing to another.
Relation
The agent and patient are beings really distinct from each other.
Transient Action
That which is the representation of the essence or thought content that has already been abstracted by the mind.
Subjective Ideal Being
Whatever is, is; and whatever is not, is not. Everything is what it is. Everything is its own being. Being is being and nonbeing is nonbeing.
Simple
The ground or reason why the subject is related to the term. This is a necessary condition for the relation.
The Foundation of a Relation
A change that stems from the agent or the one producing the change.
Concepts which involve absences that are not natural to the thing that exists.
Negative (Conceptual or Logical) Being
Whatever passes from a state of non-existence into a state of existence must have an efficient cause for its existence.
The Principle of Causality
This philosopher thought that the most primary substance is the universal idea itself. The secondary substances are the actual existing things.
Plato
Habit
That by the action of which something is produced.
Efficient Cause
That which is connected with the mind, either subjectively or objectively.
Ideal Being
A thing either is or is not. Everything must either be or not be. Between being and nonbeing there is no middle third thing possible.
The Principle of Excluded Middle
This Philosopher thought that the most primary substances are actual existing things. The secondary substances are universal ideas.
Aristotle
The three conditions of a relation
Subject, Term, Foundation
That out of which something is made
Material Cause
A product of the second act of intention. This being has no physical or metaphysical being. This being is dependent upon the mind for its existence.
Relative Logical Being