Habit in this science (as in others) according to the Philosopher, and his expositors, comes in terms of Latin language, from the verb Habeo, which means to have; this is understood in various ways and species: the one that makes this science is expressed by the Philosopher in this category, saying that Habere refers to the accident that results from the external to the body, such as weapons or clothing, stating it more precisely when he said in the same place that the term Habere signifies that adornment which is placed close to the body, as is the clothing, and Sword.
From this compound Man with the Sword in hand, which is the superior form that he acquires for perfect adornment, it results in an important question in this science, whether it admits a definition, like an accidental concrete, considered by substance and accident; or if the man is to be defined by himself, and the Sword instrument by itself.
This difficulty is not foreign to the Schools, nor to this science, as there are those who hold the opposite opinion, saying that substance and accident do not make one by themselves. They base this on their position that all concretes, in which the form is an accident of some determined subjects, are named before by accident as the Metaphysicians, Vazquez, Suarez, etc. have.
In such an apparatus, those who want the concrete, Man armed with Sword, do not admit a single definition, but distinct definitions, one of man and another of the instrument Sword, or the species of weapon with which it is adorned, understanding by distinct in the definitions the clothing, and Sword, as accidents of the concrete Armed Man.
To this difficulty it is responded that accidental concretes are defined, placing the subject in place of genus, and the accident in place of difference, as white man, black; naked, dressed; armed, unarmed, etc. The Philosopher and Saint Thomas do not disagree with this doctrine, teaching that in the accident, if it is taken concretely, the subject is defined in place of the genus, as Pedro with Sword, where Pedro is the genus, and the weapon Sword is the difference. If abstractly, it is defined, placing the accident in place of genus, and the subject in place of difference; e.g., armed with Sword is Pedro, where the weapon Sword is the genus, and Pedro, who is the subject, is the difference.
From here it will be correctly derived that the subject and the accidental form, although they do not compose one, like soul and body, do not therefore avoid that one definable results with respect to the union of the subject and form; e.g., man with Sword, although they are not one rational individual, at least is one, as subject and accidental form, with which it admits a definition: Likewise (although less perfect) the Kingdom, the Army, etc. composed of more diverse parts than man with Sword, where the doctrine of the Philosopher and Saint Thomas takes place, placing the subject for genus, and the accidental instrument for difference; or vice versa, according to whether it is defined concretely or abstractly.
In further agreement, that man with Sword in hand admits a quidative definition (like an accidental concrete) and that the Philosopher could understand it in this Predicament by one definition, and not by different ones; is the reasoning of Saint Thomas, expressing: That although the mode of signifying is not achieved by the mode of being of things; however, it is achieved, through the mode of understanding: e.g. the man with Sword in hand (which is the main subject of this Science) with respect to the immediate being of things, includes distinct parts, composing the accidental concrete of man and weapons: and yet, through the mode of understanding in operative union, it is achieved in this Science, that it is one definable.
This consequence is deduced from reason: because abstract knowledge, although it is not immediately generated from the things themselves known that compose the accidental concrete Man and Sword; it is generated at least by the operations, or by the accidents of the same concrete, because the knowledge of the substance of some subject is acquired from the operation of the same subject; e.g., man with Sword results in being known by such species that are fundamental to the formation of real being: with which the compound Man with Sword is known as one in unique knowledge, as to the effect and operation it has, since they indivisibly come from man and Sword: then if the entity of reality is perceived by the knowledge of the operation and effect: that entity is known as one, in which the effect and operation is one by unique impulse, resulting in that in the one compound of Man and Sword (because by one way proceeding from one impulse, it has the operation and the effect) all the cause Man and Sword is defined as one in the way of one.
It does not hinder opposing that in the compound of Man and Sword, the cognoscibility comes from operations and accidents, which necessarily by objective concepts admit distinction, and as such are apprehended: then not as one are Man and Sword known, and thus they will be two definables, even if they are considered one by accident.
To solve this, we must understand that the essential whole, which includes operations and effects (as far as knowledge in this Science is concerned) comes from the same whole in the way of one, and it is conceived as a real being by a unique comprehensive knowledge, even though by the reason of diverse operations and effects it can be distinguished in various degrees; e.g., the compound of mortal body and immortal soul has those operations and effects that are called vital, animal, and rational; and these, with respect to the body and soul in the way of one, we know them as coming from a principle, and everything in the effective and operative way comprehensively as one, we know them as coming from a principle, with which a single real being is formed: then in this Science in the compound of Man of the instrument Sword (which corresponds to what is mortal, transient) by the rational soul (root of the impulse and movement of the whole compound) are produced those operations and vital effects, which are called movements, tricks, wounds, etc. these, as coming from a radical principle, are known in one way, which is called Whole operating): hence in this Science a single real being is formed, and the compound of Man and Sword is defined as one, resulting in this Science to be of understanding, and exercise, which is commonly named Skill, and the scientific subject Skillful, the object being the Sword scientifically ruled. So, the Philosopher rightly admits in this category as one Habere gladium.
These considerations produce perfect knowledge of the Skill by the operating union of man and Sword, accidental concrete, which in this Science, art, and experience is called Skillful, conforming to the most used term, and easier to understand, and to define, as one understood, according to its whole: with which properly all operations and effects are explained and understood, as of a defined one, and not as different ones, because extensively, as far as the acting is concerned, they are not different compounds, or subjects, man and Sword, but an accidental concrete, which composes one, and is understood, and known as one, and admits a unique definition in this category, as expressed by the Philosopher, saying, that Habere signifies in man to be adorned with clothing, and Sword.
It does not hinder this conclusion to say that in this Science, when the parts are distributed (to cause more clarity) the man is defined by himself, and the Sword, the Given, and the other weapons are also defined by themselves with unique definitions: then to man, and Sword does not embrace a definition by complex term, with which we return to the previous objections.
The response is that this and the other objections are easily dismissed; since the head, the arm, the foot, the movement, the compass, the posture, the trick, the wound, etc. are defined as parts of a whole, to understand their minute elements in operations and effects, not because the essential definition of the concrete does not include the parts, but because for the distinct understanding of a whole, the understanding of each of its parts is necessary. The parts defined distinctly all together do not exceed the whole, and are included in its singular definition, just as the matter and the form in a man have distinct definitions; and yet, the man is defined as one.
In the same way, the accidental concrete Man with Sword in hand, subject in this science, in itself, and in its single definition, includes all its parts, which do not exceed the whole, which is called Fencer, in whom any minutest species of weapons is included, as adjuncts, although they are defined and considered as parts of the whole, which is one, and one defined in operation and effect, as has been demonstrated: so this last objection has no place, nor is it foreign, but proper to define the whole as a whole, and the parts as parts, which according to their being have special definitions, without contradiction of the universal of the whole, which includes its parts, whether it is integral, or universal.