4. But the theories and rules on this subject (to which, when you add a tongue thoroughly skilled by exercise and habit in the use of many words and many ornaments of speech, you have what is called eloquence or oratory) may be learnt apart from these writings of mine, if a suitable space of time be set aside for the purpose at a fit and proper age. But only by those who can learn them quickly; for the masters of Roman eloquence themselves did not shrink from sayings any one who cannot learn this art quickly can never thoroughly learn it at all. Whether this be true or not, why need we inquire? For even if this art can occasionally be in the end mastered by men of slower intellect, I do not think it of so much importance as to wish men who have arrived at mature age to spend time in learning it. It is enough that boys should give attention to it; and even of these, not all who are to be fitted for usefulness in the Church, but only those who are not yet engaged in any occupation of more urgent necessity, or which ought evidently to take precedence of it. For men of quick intellect and glowing temperament find it easier to become eloquent by reading and listening to eloquent speakers than by following rules for eloquence. And even outside the canon, which to our great advantage is fixed in a place of secure authority, there is no want of ecclesiastical writings, in reading which a man of ability will acquire a tinge of the eloquence with which they are written, even though he does not aim at this, but is solely intent on the matters treated of; especially, of course, if in addition he practice himself in writing, or dictating, and at last also in speaking, the opinions he has formed on grounds of piety and faith. If, however, such ability be wanting, the rules of rhetoric are either not understood, or if, after great labour has been spent in enforcing them, they come to be in some small measure understood, they prove of no service. For even those who have learnt them, and who speak with fluency and elegance, cannot always think of them when they are speaking so as to speak in accordance with them, unless they are discussing the rules themselves. Indeed, I think there are scarcely any who can do both things that is, speak well, and, in order to do this, think of the rules of speaking while they are speaking. For we must be careful that what we have got to say does not escape us whilst we are thinking about saying it according to the rules of art. Nevertheless, in the speeches of eloquent men, we find rules of eloquence carried out which the speakers did not think of as aids to eloquence at the time when they were speaking, whether they had ever learnt them, or whether they had never even met with them. For it is because they are eloquent that they exemplify these rules; it is not that they use them in order to be eloquent.