Crassus returns to the charge with a summary[21] of the actual training. The student should practise[22] not only extempore speaking from outline, but also writing. The writing that he advises here is not for the casting of a given speech in a particular form, but for education in range and control of expression. To this end he recommends also wide reading. The study of law, he adds,[23] should be both of technical detail and also of larger aspects and relations. Antonius stands his ground. His second definition of the orator is substantially a repetition of his first, merely sharpening the contrast. “But the orator[24]—and he is the subject of our inquiry—I do not define as does Crassus, who has seemed to me to include knowledge of all sciences and arts within the orator’s single function and name. I think him an orator who can use words agreeable to hear and thoughts (_sententiis_) adapted to prove in cases both forensic and deliberative; ... and I would have him also skilled in voice, gesture, and manner.” Lest there should seem to be a begging of the question in the word _sententiis_, which means thoughts and therefore may seem to imply the studies urged by Crassus, _sententia_ should be understood rather of the brilliant expression of a single idea than of a line of thought or of intellectual grasp in general. That neither of the latter is intended here is shown by the context. Because certain orators, Antonius resumes, have been masters of other things than oratory it does not follow that these other things belong to oratory. The most that can be said is that, to attain eminence in oratory, one must have heard, seen, and read much. Neither an orator’s knowledge of human nature nor his use of this knowledge in speaking is scientific. Nor must the orator be a lawyer any more than he must be an actor. Mastery of law, of acting, of history, of other things, is, indeed, an advantage; but it is not a necessity to oratory. If the orator is to be, as Crassus has described him,[25] one who can speak in ways adapted to persuade, he must sacrifice many other studies in order to master his own proper art.