De Sacrificiis Abelis Et Caini

And let us consider how we may train the soul so that it may not, from being thrown into a state of confusion, be deceived by general and unintelligible appearances, but that by making proper divisions of things it may be able to inspect and examine each separate thing with all accuracy, adopting language which will not, through being borne forward by disorderly impetuosity, cause any indistinctness, but being divided into its appropriate headings and into the demonstrations suitable to each, will be compounded like some living animal of perfect parts, properly put together. And we ought to apply ourselves to a continual meditation on and practise of these things, if we wish the use of them to be confirmed in us, as after having touched knowledge, not to abide in it is like tasting meat and drink, but being prevented from feeding on them in sufficient quantities.