A quote
I was not merely pleased; I rejoiced. So full of wit and spirit it was! I should have added “force,” had the book contained moments of repose, or had it risen to energy only at intervals. But I found that there was no burst of force, but an even flow, a style that was vigorous and chaste. Nevertheless I noticed from time to time your sweetness, and here and there that mildness of yours. Your style is lofty and noble; I want you to keep to this manner and this direction. Your subject also contributed something; for this reason you should choose productive topics, which will lay hold of the mind and arouse it.
Seneca·Letter 46 — On a New Book by Lucilius (§2)·trans. Gummere