My favorite Warhammer 40k quotes, they may be a little extreme for someone but "in the grimdark future where there is only war" this is normal:
"Rest? We were not made to rest, we go on, unflinching, unstoppable, unending in our strength. The Emperor did not make us for such mortal concerns as hearth and home, vanity or contemplation; we are his engines of war, his hammers, beating out the fabric of existence into a vessel fit for Mankind to inhabit."
-Ferrus Manus, Primarch of the Iron Hands Legion
"Tell them ruin has come to their world. Death, despair and red war...tell them their hopes and pride have come to nothing. Tell them their empty whispers fall upon deaf ears, their gods are dead, human reason has killed them. Tell them the Angels of Death have come. Tell them nothing can save them now."
-Perturabo, Primarch of the Iron Warriors Legion
"A Heretic may see the truth and seek redemption. He may be forgiven his past and will be absolved in death. A Traitor can never be forgiven. A Traitor will never find peace in this world or the next. There is nothing as wretched or as hated in all the world as a Traitor"
-Cardinal Khrysdam, Instructum Absolutio
"An open mind is like a fortress with it's gates unbarred and it's walls unguarded"
-Isador Akios, Brother-Librarian of the Blood Ravens chapter (3rd company)
"Hope is the first step on the road to disappointment"
"There is no such thing as innocence, only degrees of guilt"
"In an hour of darkness a blind man is the best guide. In an age of insanity look to a madman to show the way"
"Only the awkward question, only the foolish ask twice"
"Victory needs no explanation, defeat allows none"
"Pain is an illusion of the senses, despair is an illusion of the mind"
"Even a man who has nothing can still give his life"
"Doubt is the open gate through which slips the most fatal of enemies"
"Fight battles that are small enough to win, but large enough to matter"
-Anonymous (yes all of them)