The basic notion of justice, is that the rights of everybody are equals, in principle. In the rights of others, we have to respect our own rights. It is only in that condition that we can reasonnably require that it be respected by others.
Experience shows that what great role pratice and experience play in education; pratice, the prolonged exercice lead to habit: exemple suggests imitation. Habit can become a second nature, but, wrongly directed (or guided), it may also heighten (or intensify) unfortunate tendencies and be an obstacle to progress.
The fact that men have a same origin and live in the same universe means that they are representatives of a same unity. Deep down, they are also related (or connected) among them; that they consider (or not) themselves as strangers, this just depends on the feeling (or sensation) that dictate their relationships. In their country, two fellow coutrymen whose paths berely cross (or see each only only briefly) with inferrence, would effusively rush themselves up (or throw themselves) into each other arms if they would happen to meet in a desert, among Cannibles.
It goes without saying that only inner greatness possess a true value ("une valeur véritable,", Fr.) . Any attempt to rise up (or at rising up, - "s'élever", Fr.) outwardly above others, or to want (or wish) to impose one's superiority, denote a lack of moral greatness, since we do not try to replace ("suppléer", Fr.) in that way (.... in French "par là", Fr.) to what, if we did really possess it, would have no need whatsoever to flaunt itself.
Education has a tremendous power on man. Can't we see to which astonishing disciple the people of Sparte have submitted ("s'est plié", Fr.) for centuries, and this with a view to very petty purposes: purely outer greatness, the military predominace of Sparte. This example proves that man can everything on themselves when they want it ("peuvent tout sur eux-mêmes quand ils le veulent", Fr.); therefore it would only be a question of making them will the good.
So many forces and resources would become available if States, aware (or conscious) of their true (or real) mission, would want to get on (or agree) to abolish every politics aiming at ("visant à", Fr.) expansion or hegemony; system that maintain among nations a a perpetual distrust and tension, impose on them (or force or compel, "leur impose", Fr.) formidable armies and crushing war budgets.