Institutio Oratoria

For almost all others who have written on the art of oratory have started with the assumption that their readers were perfect in all other branches of education and that their own task was merely to put the finishing touches to their rhetorical training; this is due to the fact that they either despised the preliminary stages of education or thought that they were not their concern, since the duties of the different branches of education are distinct one from another, or else, and this is nearer the truth, because they had no hope of making a remunerative display of their talent in dealing with subjects, which, although necessary, are far from being showy: just as in architecture it is the superstructure and not the foundations which attracts the eye.