"Forget the promise of progress and understanding, for in the grim dark future there is only war. There is no peace amongst the stars, only an eternity of carnage and slaughter, and the laughter of thirsting gods."

"So can you tell me what exactly does freedom mean? If I'm not free to be as twisted as I wanna be"

"They shall be my finest warriors, these men who give themselves to me. Like clay I shall mould them and in the furnace of war forge them. They will be of iron will and steely muscle. In great armour shall I clad them and with the mightiest guns will they be armed. They will be untouched by plague or disease, no sickness will blight them. They will have tactics, strategies and machines such that no foe can best them in battle. They are my bulwark against the Terror. They are the Defenders of Humanity. They are my Space Marines and they shall know no fear."
--The Emperor of Mankind.

"The uniforms of the Imperial Guard are camouflaged in order to protect their wearers by hiding them from sight.
The principle is that what the enemy cannot see he cannot kill. This is not the way of the Adeptus Astartes. A Space Marine’s armour is bright with heraldry that proclaims his devotion to his Chapter and the beloved Emperor of Mankind. Our principle is that what the enemy can see, he will soon learn to fear…" - Chaplain Aston, Fire Hawks 10th Company

"I have at my command an entire battle group of the Astra Militarum. Fifty regiments, including specialized drop troops, stealthers, mechanised formations, armoured companies, combat engineers and mobile artillery. Over half a million fighting men and thirty thousand tanks and artillery pieces are mine to command. Emperor show mercy to the fool that stands against me, for I shall not."
--Warmaster Demetrius, at the outset of the Salonika Crusade