"The great cause which divides our countries is not to be decided by individual animosities. The harmony of private societies cannot weaken national efforts."

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But if you should take the bond of goodwill out of the universe no house or city could stand, nor would even the tillage of the fields abide. If that statement is not clear, then you may understand how great is the power of friendship and of concord from a consideration of the results of enmity and disagreement. For what house is so strong, or what state so enduring that it cannot be utterly overthrown by animosities and division?

— Marcus Tullius Cicero