The Protestant work ethic, closely associated with German culture, advocates for hard work, honesty, and fair dealing. These values stem from the teachings of Martin Luther and other Protestant reformers who emphasized ethical conduct in economic transactions. The concept of the just price can be traced to medieval Christian doctrines, particularly those of Thomas Aquinas, who argued that a fair price is one that reflects the true value of labor and materials, without exploiting either party. This theological perspective persists in German culture, where business transactions are often framed as moral agreements, requiring that prices be justified by objective criteria rather than market manipulation.