Sardinia City for But one is no longer able to avail oneself of all those subsidiary opinions, beliefs, and assumptions that formerly gave one a sense of stability and promised to provide solutions. At this point, an admission of ignorance is in order. Such an admission is the prerequisite for knowledge. Now the path is cleared. The mind is no longer cluttered with a hodgepodge of groundless opinions. Instead, one may rely on reason to catapult one into the realm of knowledge. Plato suggests that moral and political truths are of the same eternal and unchanging nature as mathematical truths. Sardinia City 2016.