Polybius — Greek Historian

Polybius was a Greek historian of the Hellenistic Period noted for his work, The Histories, which covered the period of 264–146 BC in detail. The work describes the rise of the Roman Republic to the status of dominance in the ancient Mediterranean world and included his eyewitness account of the Sack of Carthage in 146 BC. Polybius is also renowned for his ideas concerning the separation of powers in government, later used in Montesquieu's The Spirit of the Laws and in the drafting of the United States Constitution... (wikipedia)

Those who know how to win are much more numerous than those who know how to make proper use of their victories.
For the mob, habituated to feed at the expense of others, and to have its hopes of a livelihood in the property of its neighbors, as soon as it has got a leader sufficiently ambitious and daring, being excluded by poverty from the sweets of civil honors, produces a reign of mere violence.