Institutio Oratoria

But I should like to ask whether Isocrates spoke in the Attic style. For there is no author less like Lysias. They will answer in the negative. And yet it is to the school of Isocrates that we owe the greatest orators. Let us look for something closer. Is Hyperides Attic? Yes, they reply, but of an over-sensuous character. I pass by a number of orators, such as Lyucrgus and Aristogeiton and their predecessors

Isaeus and Antiphon; for though they have a certain generic resemblance, they may be said to differ in species.