Chapter II.--Objection to the Number of Extracts from Philosophical Writings in These Books Anticipated and Answered.
In reference to these commentaries, which contain as the exigencies of the case demand, the Hellenic opinions, I say thus much to those who are fond of finding fault. First, even if philosophy were useless, if the demonstration of its uselessness does good, it is yet useful. Then those cannot condemn the Greeks, who have only a mere hearsay knowledge of their opinions, and have not entered into a minute investigation in each department, in order to acquaintance with them. For the refutation, which is based on experience, is entirely trustworthy. For the knowledge of what is condemned is found the most complete demonstration. Many things, then, though not contributing to the final result, equip the artist. And otherwise erudition commends him, who sets forth the most essential doctrines so as to produce persuasion in his hearers, engendering admiration in those who are taught, and leads them to the truth. And such persuasion is convincing, by which those that love learning admit the truth; so that philosophy does not ruin life by being the originator of false practices and base deeds, although some have calumniated it, though it be the clear image of truth, a divine gift to the Greeks;  nor does it drag us away from the faith, as if we were bewitched by some delusive art, but rather, so to speak, by the use of an ampler circuit, obtains a common exercise demonstrative of the faith. Further, the juxtaposition of doctrines, by comparison, saves the truth, from which follows knowledge.
Philosophy came into existence, not on its own account, but for the advantages reaped by us from knowledge, we receiving a firm persuasion of true perception, through the knowledge of things comprehended by the mind. For I do not mention that the Stromata, forming a body of varied erudition, wish artfully to conceal the seeds of knowledge. As, then, he who is fond of hunting captures the game after seeking, tracking, scenting, hunting it down with dogs; so truth, when sought and got with toil, appears a delicious  thing. Why, then, you will ask, did you think it fit that such an arrangement should be adopted in your memoranda? Because there is great danger in divulging the secret of the true philosophy to those, whose delight it is unsparingly to speak against everything, not justly; and who shout forth all kinds of names and words indecorously, deceiving themselves and beguiling those who adhere to them. "For the Hebrews seek signs," as the apostle says, "and the Greeks seek after wisdom."