The particular aspect of history which both attracts and benefits its readers is the examination of causes and the capacity, which is the reward of this study, to decide in each case the best policy to follow. Now in all political situations we must understand that the principle factor which makes for success or failure is the form of a state's constitution: it is from this source, as if from a fountainhead, that all designs and plans of action not only originate but reach their fulfillment.
PolybiusFor peace, with justice and honor, is the fairest and most profitable of possessions, but with disgrace and shameful cowardice, it is the most infamous and harmful of all.
PolybiusNor ought we ever to allow any growing power to acquire such a degree of strength as to be able to tear from us, without resistance, our natural, undisputed rights.
Polybius