>>821383
The fist lines, before the part translated by OP, say:
>"Letter from the Jews of Spain
Another interesting antecedent in found in a fragment from the book "La Silva Curiosa", by Julián de Medrano, published in Paris in 1583 and which belongs to the genre of miscellanea, where we can read:"
Then, the part OP translated follows. The language of the letters are perfectly credible. The jews were expelled in 1492 and the book is written less than a century later, so even if the letter is a creation of the author, the language is all right. It is, however, quite likely that the letters are, in fact, a fabrication by the author. From Wikipedia:
<"Julián de Medrano […] escribió algunas obras en español, entre ellas, la Silva curiosa […] perteneciente al género de la miscelánea, libro calificado de marginal, extravagante y casi disparatado, por su editora moderna, Mercedes Alcalá Galán"
>"Julián de Medrano […] wrote some works in Spanish, among them, the Silva Curiosa […] which belnogs to the genre of miscellanea, book qualified as marginal, extravagant and almost absurd/nonsensical by it's modern editor, Mercedes Alcalá Galán"
https://es.wikipedia.org/wiki/Julián_de_Medrano
Regarding the so-called "Hermit of Salamanca", I found this extract from the book. The annotation 21 talks about him: chrome-extension://oemmndcbldboiebfnladdacbdfmadadm/http://projects.cultureplex.ca/preliminares/S.%20XVI/92.%20La%20silva%20curiosa.%20Medrano.pdf
It's rather long, so I'm not translating it. I basically says that's an enigmatic character who's cited and mentioned through the book, as if his identity was obvious to the reader, and considered an authority in moral and religious matters. The city of Salamanca had the most important university in Spain, which together with his condition of hermit, implies this character is both intellectually and spiritually wise.
So, OP's jewish letter comes from what is, essentially, a 16th century novel. It's bit like the Canterbury tales, which are narrated as if they were memories from a journey to Canterbury (in this case, the author is traveling to the city of Santiago) but it's a work of fiction.
If anyone wants the full book, its 1878 edition is scanned here: https://archive.org/details/lasilvacuriosa00osungoog/page/n17
>>821233
As a fellow Spaniard (I'm assuming you're Spanish, forgive me if I'm wrong) I understand your ire and frustrations; our it's a mistreated country, both by foreigners and locals. Spain has proudly stand in defense of Catholicism for more than 500 years (if you consider it was founded in 1492, or for more than 1300, if you want to go back to 711) and that has earned her many enemies. However, don't let this blind you, don't believe something is true just because it confirms your opinions. OP, be a good person and lead by example. Make this world a better world one person at a time, starting with yourself. Be quick to love, not to hate. That's the best way to fight, by being someone without taint.
>I need to know that I must study, to fight evil politically. Maybe economics, law, or political science …
Most politicians study law. It's a wicked career, though. Most come out of it idolizing and worshiping the State, as if it was a being capable of independent existence. Political science , like sociology, anthropology and similar social sciences, is a marxist hell-hole. All their doctrine is based upon structuralism (Max Weber and Frankfurt school thinking). History is relatively leftist-free, probably the lest tainted of all the humanities / social sciences. Economics is definitely marxist-free, but it has it's own set of problems; Keynesian economics are basically globalist world government apologetics.
>I want advice on what I should do
Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind, and love your neighbor as yourself. I know, you've heard that a thousand times. I know, it sounds bland and cheesy, but trust me, let the Spirit act through you and the path will be clear.