Epilogue
  The IAU Symposium 230, Populations of High Energy Sources in Galaxies, has been a wide-spectrum affair, with talks discussing results from the soft X-ray to the Gamma-ray range on virtually the entire universe, from our Galaxy to the high redshift regions when first galaxies emerged. I do not name any presenter in this summary, but concentrate on themes and results that I have found striking. 
G. Fabbiano