Plutarch De exilio 5

[5] Wherefore, if we fall into any real evil or calamity, we must bring in what is pleasant and delightful of the remaining good things in our possession, and thus, by what we enjoy at home, mitigate the sense of those evils that befall us from abroad. But where there is no evil in the nature of the things, but the whole of that which afflicts us is framed by imagination and false opinion, in this case we must do just as we deal with children that are apt to be frighted with false faces and vizards; by bringing them nearer, and making them handle and turn then on every side, they are brought at last to despise them; so we, by a nearer touching and fixing our consideration upon our feigned evils, may be able to detect and discover the weakness and vanity of what we fear and so tragically deplore.

Such is your present condition of being banished out of that which you account your country; for nature has given us no country, as it has given us no house or field, no smith’s or apothecary’s shop, as Ariston said; but every one of them is always made or rather called such a man’s by his dwelling in it or making use of it. For man (as Plato says) is not an earthly and unmovable, but a heavenly plant, the head raising the body erect as from a root, and directed upwards toward heaven. ¹ Hence is that saying of Hercules: But Socrates expressed it better, when he said, he was not an Athenian or a Greek, but a citizen of the world (just as a man calls himself a citizen of Rhodes or Corinth), because he did not enclose himself within the limits of Sunium, Taenarum, or the Ceraunian mountains. These are the boundaries of our country, and no man is an exile or a stranger or foreigner in these, where there is the same fire, water, air, the same rulers, administrators, and presidents, the same sun, moon, and daystar; where there are the same laws to all, and where, under one orderly disposition and government, are the summer and winter solstices, the equinoxes, Pleiades, Arcturus, times of sowing and planting; where there is one king and supreme ruler, which is God, who comprehends the beginning, the middle, and end of the universe; who passes through all things in a straight course, compassing all things according to nature: justice follows him to take vengeance on those that transgress the divine law, which justice we naturally all make use of towards all men, as being citizens of the same community.