According to Željko Mardešić, two contrary nostalgias always existed in the Church. The first nostalgia is based on the Eucharistic celebration memory, and it refers to the return to divine humanity and communion of the faithful. It seeks inspiration for credible testimony of faith in the beginnings of Christianity; it is the original inspiration for all Christians. The second nostalgia is the desire to restore the secular might of the Church. It appears in much later stages, when the Church became the state Church and embraced Roman law and Greek philosophy. Emperor Constantine is the inceptor of the secular power of Christianity, biding the Empire to the Church. The Church would later, in Medieval Europe, become the most powerful secular