The concept of the ephemeral has been changing throughout history. It is associated with the brief, the fleeting, the passing or the momentary. The opposite of permanent. But, is it really so? Already in pre-Socratic Greece the relationship between the ephemeral and the permanent was analysed by philosophers. Heraclitus of Ephesus held that opposites are not opposites, but form a harmonic unit, constantly changing. One exists as a consequence of the other. They need each other in order to exist. What persists through change is change itself. “All things flow, everything is in motion and nothing lasts forever. Therefore, we cannot descend twice into the same river, for when I descend into the river a second time, neither the river nor I are the same.”1