there are means which no ends could justify
In the process of unifying China, the "first emperor" Qin Shi Huang Di attempted to crushed all dissent and debate. The great Chinese historian Sima Qian records the Qin Emperor's chief adviser, Li Si, saying thus:
"Now the August Emperor has unified all under heaven, distinguishing black from white and establishing a single source of authority. Yet these adherents of private theories band together to criticize the laws and directives. Hearing that an order has been handed down, each one proceeds to discuss it in the light of his theories. At court they disapprove in their hearts; outside they debate it in the streets. They hold it a mark of fame to defy the ruler, regard it as lofty to take a dissenting stance, and they lead the lesser officials in fabricating slander. If behavior such as this is not prohibited, then in upper circles the authority of the ruler will be compromised, and in lower ones cliques will form. Therefore it should be prohibited.
"I therefore request that all records of the historians other than those of the state of Qin be burned. With the exception of the academicians whose duty it is to possess them, if there are persons anywhere in the empire who have in their possession copies of the Odes, the Documents, or the writings of the hundred schools of philosophy, they shall in all cases deliver them to the governor or his commandant for burning. Anyone who ventures to discuss the Odes or Documents shall be executed in the marketplace. Anyone who uses antiquity to criticize the present shall be executed along with his family. Any official who observes or knows of violations and fails to report them shall be equally guilty. Anyone who has failed to burn such books within thirty days of the promulgation of this order shall be subjected to tattoo and condemned to 'wall dawn' [convict] labor. The books that are to be exempted are those on medicine, divination, agriculture, and forestry. Anyone wishing to study the laws and ordinances should have a law official for his teacher." An imperial decree granted approval of the proposal.
"Now the August Emperor has unified all under heaven, distinguishing black from white and establishing a single source of authority. Yet these adherents of private theories band together to criticize the laws and directives. Hearing that an order has been handed down, each one proceeds to discuss it in the light of his theories. At court they disapprove in their hearts; outside they debate it in the streets. They hold it a mark of fame to defy the ruler, regard it as lofty to take a dissenting stance, and they lead the lesser officials in fabricating slander. If behavior such as this is not prohibited, then in upper circles the authority of the ruler will be compromised, and in lower ones cliques will form. Therefore it should be prohibited.
"I therefore request that all records of the historians other than those of the state of Qin be burned. With the exception of the academicians whose duty it is to possess them, if there are persons anywhere in the empire who have in their possession copies of the Odes, the Documents, or the writings of the hundred schools of philosophy, they shall in all cases deliver them to the governor or his commandant for burning. Anyone who ventures to discuss the Odes or Documents shall be executed in the marketplace. Anyone who uses antiquity to criticize the present shall be executed along with his family. Any official who observes or knows of violations and fails to report them shall be equally guilty. Anyone who has failed to burn such books within thirty days of the promulgation of this order shall be subjected to tattoo and condemned to 'wall dawn' [convict] labor. The books that are to be exempted are those on medicine, divination, agriculture, and forestry. Anyone wishing to study the laws and ordinances should have a law official for his teacher." An imperial decree granted approval of the proposal.