StarÄ eviÄ had based his ideological views on writings of those ancient Greek writers who thought that some people , by their very nature , are slaves , for they had `` just half of the human mind '' and , for that reason , they `` shall be governed by people of the human nature '' . StarÄ eviÄ based his ideological views on writings of ancient Greek writers who thought that some people , by their very nature , are slaves , for they had `` just half of the human mind '' and , for that reason , they `` shall be governed by people of the human nature '' .