In the last part of his work he made a praiseworthy attempt to acquaint the Greeks with the character and early history of the Romans.
Acquaint thyself with a physician before thou have need of him.
Hence in education the teacher should fully acquaint himself with the mental development of the pupil, in order that he may make full use of what the pupil already knows.
After a remark that microscopes seem as capable of improvement as telescopes, he adds: " I shall now proceed to acquaint you with another more notable difformity in its Rays, wherein the Origin of Colour is unfolded: Concerning which I shall lay down the Doctrine first, and then, for its examination, give you an instance or two of the Experiments, as a specimen of the rest.
To bring educated readers into touch with critical workers it is needful to acquaint them with these various points, the neglect of any one of which may to some extent injure the results of criticism.