Sentence:  But lest I be thought too literall, give me leave to allegorize upon this <WSD>Irene</WSD>. Her name is a Greek name, "Εἰρήνη", it signifies peace; we must not dote upon our <WSD>Irene</WSD>, our private peace, that the publique should suffer for the sake of it. 
Meaning of the word marked with <WSD> tags:  (from=Ancient Greek), in regular use since the 19th century.