All social cooperation on a larger scale than the most intimate social group requires a measure of coercion.

One should do what one is best at on as large a scale as possible.

The balance of power is the scale of peace. The same balance would be preserved were all the world not destitute of arms, for all would be alike; but since some will not, others dare not lay them aside… Horrid mischief would ensue were one half the world deprived of the use of them… the weak will become prey to the strong

The balance of power is the scale of peace