Iacobi Acontii Tridentini de methodo, hoc est, de recta investigandarum, tradendarumque artium, ac scientiarum ratione

...teaches strives to impart to others.

III. It must be said, therefore, what is understood to be the complete knowledge of some thing: that is, in what it consists, or when we are said to have it; soon, of what things it can be had, and what sort of person is capable of such knowledge. Finally, from what causes it is generated. And it should be known that the knowledge treated here is that which is acquired by the aid of reasoning, not that which we think is innate to us, such as the knowledge of common conceptions of the mind, nor that which proceeds from the senses, of which we will speak below.

IIII. We shall consider that we have the complete knowledge of some thing when we know what it is, what its causes are, or its effects. And whoever can perceive all these things concerning any thing, without doubt, he will also be able to perceive the individual parts.

V. And lest anyone perhaps looks more at the words than at the things themselves, it should be noted that in the arts, both in knowing and in teaching them, those causes of a thing are generally understood which look toward the ends of the arts themselves. For if the end of Rhetoric is set as persuasion, then I will think you have attained the causes of Rhetoric only if you have attained the causes of persuasion.