All participants at this meeting agree that it has been very exciting, this for three reasons. First, it has put together astrophysicists, laboratory and theoretical physicists and also chemists, thanks to the interdisciplinary nature of the field of interstellar dust. Second, we have had a very exciting confrontation between meteolitiscists, and specialists of interstellar, and cometary dust, and we saw growing evidence that interstellar dust is a pervasive solar-system material, although the history of this dust may have been peculiar. Third, last but not least, there has been in the recent years a wealth of new data on interstellar dust emerging from observations in various wavelength ranges, especially the infrared, and a lot of new laboratory data and sophisticated theories that allow us to interpret the observations. Clearly the study of interstellar dust, which had remained in its infancy for such a long time, is becoming a mature and much less speculative field.