There was and, perhaps, still exists a kind of secret society, which was mentioned by Nostradamus in his writings. Some researchers use the name "Etruscan brotherhood" for it, since the exact name is unknown today.
This brotherhood, which included women (sisters), consisted of European, Indian and Asian branches. Probably, there was a connection between these directions, since they used uniform symbols and educational tables.
The members of this society did not belong to the "free masons", who began to actively operate from about the 17th century. Nor did they belong to the Rosicrucians, whose symbol of the order was the rose. Nor were they Templars, descended from the Order of the Knights-Crusaders. These are not the Cathars, who gave a kind of generalized name for all those who did not recognize the dogmas of the Catholic Church.
They were not the first Christians to use cryptography in their numerous sects in the first half of the first millennium, which bore a striking resemblance to Nostradamus's encrypted writing system. But this is also not the Romans, although the primary education of every aristocrat among them included the teaching of divine geometry.
Most likely, the aforementioned "secret philosophical society" included the Etruscans, who left behind a lot of notes intended for initiates. And since the surviving evidence of the Etruscan culture traces a commonality with the ideas of Pythagoras, it can be assumed that Nostradamus was talking about a group of Pythagoreans.
These were people who sought to organize an ideal state and believed, following their teacher, that the words and their individual letters correspond to mathematical formulas, music embodies the harmony of pure mathematics, and philosophy points to the prospects for the future. They believed in the transmigration of souls and developed a "Pythagorean way of life" based on a complex system of cult prohibitions.
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After the death of Pythagoras, his supporters were divided into believers in the word - acusmatics and believers in the rule - mathematicians. The first of them said: "The teacher said so, and therefore it is so." Others recognized only that which could be proved by rules and their derivatives.
In 500 BC, a group of Pythagorean mathematicians were expelled from Rome and forced to seek refuge in Tuscany. These people constituted the last large association that preserved the memory of a certain sacrament, the knowledge of which was brought with him from Egypt by Pythagoras, who spent twenty-two years there, the founder of Pythagoreanism (religious and philosophical doctrine), based on the idea of number as the basis of all that exists. It was the mathematicians who founded the "secret philosophical society" mentioned by Nostradamus.
For 2,500 years, acusmatics outnumbered mathematicians. This can be explained by the fact that it is not difficult to live and conduct polemics with opponents according to the principle: "Pythagoras said, then it is so."
Mathematicians, due to the lack of the necessary technical means, did not have the opportunity to confirm their considerations in practice. At the same time, the bolder the point of view expressed on a particular issue was, the more impossible it was to confirm it. Over time, the contradictions between mathematicians and acusmatists became completely intolerable.
The situation has changed dramatically over the past 250 years. Scientists engaged in natural sciences, primarily chemistry, physics, astrophysics and atomic physics, have proven the conclusions of ancient mathematicians. It became possible to formulate the laws of nature and substantiate many hypotheses.
Since only isolated evidence of the activities of this group has survived, the question arises whether there is comprehensive confirmation that mathematicians really took the position of Pythagoras. There are such signs.
Imagine a five-by-five chessboard with black and white squares ("0" stands for white, "1" for black). Table "A" is a combination of two shapes. Nostradamus also called them "the eternal two", from which everything comes and to which everything returns.
If we single out the components of the "eternal two", then it turns out: firstly, table "B" - "radiant cup" of Nostradamus, and secondly, table "C" - an image similar to the Maltese cross. Wherever these symbols or templates were found, the knowledge of the "Etruscan brotherhood" was at least known.
When Christians, several centuries after the birth of Christ, were able to set the tone in Rome, the last Etruscans had already been underground for 900 years. It's not hard to guess that mathematicians headed towards today's Nice, located on the Mediterranean coast. Some of them apparently wished to return to Greece, where their teacher and master Pythagoras came from.
One can imagine that not all fugitives made it to the Greek lands. One of these groups is believed to be "stuck" in what is now Trogir, near Split on the Adriatic coast, a city where ships from Italy entered the harbor. At that time there were events that should be paid attention to.
25 kilometers from today's Trogir, Emperor Diocletian, who was from those places and, most likely, came from a family of mathematicians, ordered to build himself a luxurious palace. In it he intended to spend the rest of his life. For twenty years he ruled in Rome, then transferred power to the heir and retired.
The motives behind the emperor's decision are quite obvious to those who are looking for traces of the "Etruscan brothers". One of the greatest mysteries of Christianity has been kept in these places for 1,900 years. If St. Peter's Cathedral was erected in Rome, then the Church of St. John should have stood in Trogir.
All these centuries the fact that Saint John died and was buried in Trogir, having got there on his way to Rome, was hardly hidden. Later, the Christian community, which became interested in this, was surprised to learn that among the apostles of Christ, Saint John was a mathematician, and Saint Peter was an acusmatician.
However, the plans of the Roman Church did not include that Trogir became the second place of pilgrimage for Christians in the Western world, as this could spark a discussion about the right choice of a place for the residence of the head of the Catholic Church.
As a result of the Crusades, these facts became known again. Information about them, according to M. Dimde, was transmitted from the Templars through Dante to Nostradamus, Shakespeare and Goethe. And Rome burned out this knowledge with a hot iron. Indeed, in this city gathered acusmatics - followers of St. Peter, there were also mathematicians who followed the precepts of St. John.
One of the groups of Cathars independently learned about this information. They were found out by Dante Alighieri, the great Italian poet who was born in 1265 in Florence. Perhaps the above became known to him after studying family chronicles. After all, he could trace his origins back to one crusader who lived at the beginning of the 12th century. His main work "Divina commedia" - according to the prophecies of Nostradamus. And, of course, it is no coincidence that the text of The Divine Comedy consists of exactly one hundred songs.
Nostradamus in his writings traces the future history of mankind. Could it be that he took Dante's texts, translated it into French and encrypted it again? This version cannot be completely discounted, as it is associated with the role of the city of Siena located in Tuscany.
In this city, an attempt was made to keep the secrets secret. It is not surprising in this regard that it was from among the clergy of Siena that the bishops of Trigor were appointed for a long period of time, all of them bearing the name John.
Dante laid the secrets of mathematicians in his "Divine Comedy". The fathers of the city of Siena were strongly influenced by Etruscan culture, since traditionally among them the political tone was set by the initiates. They set out to erect a cathedral, which in its size was to surpass St. Peter's in Rome. But at the last moment, the clever heads in Siena abandoned this venture. Therefore, their city was not in danger of being completely destroyed by Rome.
The consecrated fathers of the city inscribed the laws of mathematicians, rediscovered by Dante, on the marble walls of the cathedral located in their city, and decorated the floors of the church building with these inscriptions. Thus, they got one hundred seventy-two popes to look at these secrets.
With the help of a brilliant trick, they managed to prevent a situation in which these marble paintings could be recognized as heretical.
The coats of arms of individual parts of the city resemble the ancient game of mathematicians, which consisted in tracing the history of the creation of the world. Horse races are held annually in Siena, and the participating horses are decorated with the coats of arms and flags of the urban areas.
Used materials from the book by R. S. Belousov "All about Nostradamus"