But in republics there is more vitality, greater hatred, and more desire for vengeance, which will never permit them to allow the memory of their former liberty to rest; so that the safest way is to destroy them or to reside there.
 Niccolò Machiavelli, The Prince (1532). copy citation

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Author Niccolò Machiavelli
Source The Prince
Topic memory liberty
Date 1532
Language English
Reference
Note Translated by W. K. Marriott
Weblink http://www.gutenberg.org/files/1232/1232-h/1232-h.htm

Context

“But when cities or countries are accustomed to live under a prince, and his family is exterminated, they, being on the one hand accustomed to obey and on the other hand not having the old prince, cannot agree in making one from amongst themselves, and they do not know how to govern themselves. For this reason they are very slow to take up arms, and a prince can gain them to himself and secure them much more easily. But in republics there is more vitality, greater hatred, and more desire for vengeance, which will never permit them to allow the memory of their former liberty to rest; so that the safest way is to destroy them or to reside there. CHAPTER VI — CONCERNING NEW PRINCIPALITIES WHICH ARE ACQUIRED BY ONE'S OWN ARMS AND ABILITY
Let no one be surprised if, in speaking of entirely new principalities as I shall do, I adduce the highest examples both of prince and of state; because men, walking almost always in paths beaten by others, and following by imitation their deeds, are yet unable to keep entirely to the ways of others or attain to the power of those they imitate.” source