As for the State of Raška, protected on the south and west by formidable mountains, and in the very centre of the Serbian tribes, it is there that the lore and customs of the people have survived in their purest form. Raška was the land in which the love of liberty was always kept alive and from there the expeditions used to sally forth whose aim, frustrated many times, it was to found a powerful Serbian State. The chieftain, Tshaslav Kronimirović, did, as a matter of fact, succeed in uniting his State with two others, one being in Bosnia and the other in Zeta, which is now Montenegrin. He even added three other provinces on the Adriatic coast; but after his death the State was dissolved and in the course of the conflicts which followed, the State of Zeta assumed the leadership. It had been necessary for these Serbian rulers of Raška and Zeta to resist the frequent assaults not only of the Byzantines but of the Bulgars. SIMEON THE BULGAR "Frequent assaults" is probably a correct description of what the Serb of that period had to endure at the hands of this particular opponent, the Bulgar. Having swarmed across the Peninsula, the Bulgar was now in the act of consolidating a great kingdom, for this was the magnificent epoch of the Bulgarian Tzar Simeon, whose word ran far and wide from the Adriatic. The Bulgarian map[9] which exhibits the Tzardom at the death of Simeon is painted in the same brown colour from opposite Corfu right across to the Black Sea and up as far as the mouths of the Danube, which signifies that in those parts (including, of course, Macedonia) the word of Simeon was supreme. But the Serbian provinces of Raška, Zeta, Bosnia and some adjoining lands are painted brown and white, being hatched with white diagonal lines; and this indicates very candidly that in the north-west Simeon was not omnipotent. We are indeed told in the letterpress that "on the other hand Simeon meanwhile took the opportunity to settle accounts with the Serbians because of their perfidious policy, and he subjected them in the year 924"; but doubtless this was a kind of subjection which in 925 would have to be repeated, and this would account for one of Simeon's faithful chroniclers having made that allusion to perfidious policy. Of the Tzar himself we are given an attractive picture: unlike his father, Boris, who patronized Slav literature for the reason that it made his State less permeable to Byzantine influence, Simeon had no political object in his encouragement of native literature.[10] He was himself a man of letters, having studied at Constantinople. He was acquainted with Aristotle and Demosthenes, he discussed theology with the most eminent doctors of the Church, and of positive science--or of what was then regarded as such--he possessed everything which had survived the great shipwreck of ancient thought. Not only did he found monasteries and schools, but he gathered writers round him; and, in