Sentence:  that such iron moulds as these shall have autority to knaw out the choicest <WSD>periods</WSD> of exquisitest books, and to commit such a treacherous fraud against the orphan remainders of worthiest men after death, the more sorrow will belong to that haples race of men, whose misfortune it is to have understanding. 
Meaning of the word marked with <WSD> tags:  A complete sentence, especially one expressing a single thought or making a balanced, rhythmic whole. (from 16th c.)