The common interest in the phenomenon of sustainability and its relation to sustainable development and education has marked the trajectory of the JTES and the JTES network, which shows that even complex phenomena can be addressed and solved by those who cannot help but ask important questions about the world we live in, who we are and how we treat the world by acting and living in it. Attitudes towards such deeply focused issues can vary. There are times when someone is satisfied with shallow answers and a quiet life that does not cause problems. However, this will not be the case found in the perception of life by people open to life. In recent years, we have increasingly understood our relationship with the environment in which we find the meaning of our lives and our shared call to understand and formulate a sense of living reality that goes beyond specific desires and pragmatic values.