That occurrence of its needs to be punctuated as it's.

Polybius’s pragmatic history is simply the history of affairs, as distinguished from the descriptive and often poetical character which much history before his time had.

But never mind the inconvenience of the inconclusion.

Short and shy, he seems timid as he looks out through coke-bottle glasses. But for the past several years, 52-year-old astrophysicist Fang Lizhi has been China's best-known dissident - a relentless critic of the ruling Communist party