Scientists say everything changes constantly. We may say, nothing is constant, only change. Many individuals and many communities think, or they would like to think that old patterns of their existence will work forever. But time and the realities of life challenge us all, and call us to revise our principles, our creeds, our laws, our way of being and thinking. Circles of our communities are in a constant movement, and depending on our decisions, we help our circles to grow or we narrow it. The circle is a magic shape. From the circles of Archimedes, the ancient scientist through the circles of love in which Jesus, the prophet tried to create the kingdom of God and the circle around which the knights of King Arthur believed in the possibility and the power of equality and mutual respect, we arrive to our communities and our circles. What kind of changes and challenges do we experience in Transylvanian Unitarian and in American Unitarian Universalist circles?