The values that people hold are the most important factor in deciding whether they endorse sustainable development. At the same time value orientations are likely to change over long time periods. International long-term research conducted by Ronald Inglehart in the second half of the twentieth century tried to capture the shift from material to post-material values. With respect to a sustainable lifestyle the research revealed a problem: there is a relationship between post-materialistic attitudes and the level of GDP. What can (...) be done to preserve the quality of the environment and at the same time allow countries to develop economically? Czech environmentalist Josef Vavroušek defined a framework of key values that are typical for an industrial society. He assigned alternative values to them that should be compatible with sustainable living. The values of Euro-American culture and civilization stem from the heritage of Judaism and Christianity, which find fundamental ethical importance in the Ten Commandments. Modern times, however, bring new challenges and it is not easy to distinguish between what is good and what is not; for example, genetic engineering, experiments on humans, polluting the environment and lives in excessive wealth. (shrink)