Abstract
The aim of the article is an attempt to present selected aspects of ethical solidarity in politics on the example of the implementation of the idea of subsidiarity in the process of European integration. The term idea of subsidiarity and the principle of subsidiarity are used interchangeably here, according to the type of consideration, with the authors and also with intuition. We assume that there is the possibility of observing common and complementary levels of understand- ing for ethics and politics, and that this was supported by the implementation of the idea of subsidiarity in the process of establishing the European Union. This work does not exhaust the topic, but tries to be a contribution to further research.