The Law of Nations, or Principles of the Law of Nature: Applied to the Conduct and Affairs of Nations and Sovereigns. E-book. Formato PDF Emer De Vattel   -  Forgotten Books, 2017  - 

A nation must not sim ly confine itself to the preservation a s. It ought of other states; it shoul likewise, according to its power and wwnffibm their want of its assistance, contribute to their perfection.