 Complete the following phrase:  After the Kristallnacht pogrom in 1938, Eucken was one of several Freiburg academics who banded together with several local priests in a so-called Konzil, where they debated the obligation of Christians to fight against tyranny. The Freiburg Circles had links to Dietrich Bonhoeffer and Carl Friedrich Goerdeler, key figures of the resistance against Hitler. Bonhoeffer asked Eucken, and Constantin von Dietze to write an appendix to a secret memorandum, in which they worked out a post-war economic and social order. The central planning system of the Nazis was to be replaced with a liberal competitive system. If the attack of 