Li Si
Believing in a highly bureaucratic system, Li Si is considered to have been central to the efficiency of the state of Qin and the success of its military conquest. He was also instrumental in systematizing standard measures and currency in post-unified China. He further helped systematize the written Chinese language by promulgating as the imperial standard the small seal script which had already been in use in the state of Qin. In this process, variant glyphs within the Qin script were proscribed, as were variant scripts from the different regions which had been conquered. This would have a unifying effect on the Chinese culture for thousands of years. Li Si was also the author of the "Cangjiepian", the first Chinese language primer of which fragments still exist.