In our fast developing modern society I, as an architecture student, experience an increasing human resistance against the inevitable processes of change, imperfection, impermanence, incompleteness and transience. It is difficult to understand what the essence is for our happiness. Within this research project I would like to reflect on this by exploring the philosophical and architectural dilemmas between eternity and transience and perseverance and ephemerality. The project aims to describe architectural concepts and develop tools based on different philosophical and architectural movements in which perishability and ephemerality play a key role. It will aim to provide a better understanding of the relationship between these concepts and their role in modern architecture. I hope to identify an approach how architects could possibly contribute to a better acceptance of these human core values.