"By the Word and Will of the Master of Mankind, Imperator Imperatoris, Terra Regnum, it is hereby decreed that these collected realms and worlds be known in perpetuity as the Imperium of Mankind. This dominion shall belong solely to Him on Terra, that His Wisdom might see it endure for all time and unite all of Mankind under His banner." – From the Proclamation of Unity, issued by order of the Emperor after the Triumph at Ullanor.

"We claim that which is our right – the worlds won with our blood and sacrifice and the power that falls to those with the will to grasp it. This Imperium belongs not to an absent Emperor, but to the warriors that forged it and still fight in its name. These realms and territories known as the Imperium of Mankind I claim in the name of those warriors, so let Horus Lupercal be proclaimed the true Emperor and right master of Mankind." – From the Dark Compliance of Horus, broadcast to all astropathic nexus of the galactic north.

Artist: Holly Goodwin