Difference between syllogism and demonstration

So that there is a compound advantage of demonstration: from its assuming, for the proof of points in question, true premisses, and from its drawing the conclusion that follows from them. If the first have no existence, but the second follow from the first, one has not demonstrated, but syllogized.

For, to draw the proper conclusion from the premisses, is merely to syllogize. But to have also each of the premisses true, is not merely to have syllogized, but also to have demonstrated.

Clement of Alexandria
The Stromata, Book VIII
Chapter III

 

The Catholic Church is one tradition not named after a man or a place

Therefore in substance and idea, in origin, in pre-eminence, we say that the ancient and Catholic Church is alone, collecting as it does into the unity of the one faith— which results from the peculiar Testaments, or rather the one Testament in different times by the will of the one God, through one Lord— those already ordained, whom God predestinated, knowing before the foundation of the world that they would be righteous. But the pre-eminence of the Church, as the principle of union, is, in its oneness, in this surpassing all things else, and having nothing like or equal to itself. But of this afterwards. Of the heresies, some receive their appellation from a [person’s] name, as that which is called after Valentinus, and that after Marcion, and that after Basilides, although they boast of adducing the opinion of Matthew [without truth]; for as the teaching, so also the tradition of the apostles was one. Some take their designation from a place, as the Peratici; some from a nation, as the [heresy] of the Phrygians; some from an action, as that of the Encratites; and some from peculiar dogmas, as that of the Docetæ;, and that of the Hærmatites; and some from suppositions, and from individuals they have honoured, as those called Cainists, and the Ophians; and some from nefarious practices and enormities, as those of the Simonians called Entychites.

Clement of Alexandria
The Stromata, Book VII
Chapter XVII

The Christian life is deeds and words in the tradition of the Lord

Our Gnostic then alone, having grown old in the Scriptures, and maintaining apostolic and ecclesiastic orthodoxy in doctrines, lives most correctly in accordance with the Gospel, and discovers the proofs, for which he may have made search (sent forth as he is by the Lord), from the law and the prophets. For the life of the Gnostic, in my view, is nothing but deeds and words corresponding to the tradition of the Lord.

Clement of Alexandria
The Stromata, Book VI
Chapter XVI

Heresies ignore the traditions and generate their own dogma

And as those almonds are called empty in which the contents are worthless, not those in which there is nothing; so also we call those heretics empty, who are destitute of the counsels of God and the traditions of Christ; bitter, in truth, like the wild almond, their dogmas originating with themselves, with the exception of such truths as they could not, by reason of their evidence, discard and conceal.

Clement of Alexandria
The Stromata, Book VII
Chapter XVI

Mary remained ever-virgin after the birth of Christ

But, as appears, many even down to our own time regard Mary, on account of the birth of her child, as having been in the puerperal state, although she was not. For some say that, after she brought forth, she was found, when examined, to be a virgin.

Now such to us are the Scriptures of the Lord, which gave birth to the truth and continue virgin, in the concealment of the mysteries of the truth. “And she brought forth, and yet brought not forth,” says the Scripture; as having conceived of herself, and not from conjunction. Wherefore the Scriptures have conceived to Gnostics; but the heresies, not having learned them, dismissed them as not having conceived.

Clement of Alexandria
The Stromata, Book VII
Chapter XVI

A logoi of Matthew the Apostle

They say in the traditions that Matthew the apostle constantly said, that “if the neighbor of an elect man sin, the elect man has sinned. For had he conducted himself as the Word prescribes, his neighbor also would have been filled with such reverence for the life he led as not to sin.”

Clement of Alexandria
The Stromata, Book VII
Chapter XIII