interretialia:Ἄφθονοι Μουσῶν θύραι. Invidiae expertes Musarum fores.The doors of the Muses are free
interretialia:Ἄφθονοι Μουσῶν θύραι. Invidiae expertes Musarum fores.The doors of the Muses are free of envy.(From Bestiaria Latina Blog.) -- source link