Sentence:  The two <WSD>Plinys</WSD>, Lucan, (though again under the disadvantage of verse) Petronius Arbiter, and Quintilian, but above all, the Senecas, (for a Spanish cross appears to improve the quality of the rhetorician) have left a body of rhetorical composition such as no modern nation has rivalled. 
Meaning of the word marked with <WSD> tags:  An ancient Roman praenomen.