If I were a proper brother-captain, I would know the prayer we are supposed to say. But I think you all know what we have to do. We do not know what our chances of survival are, so we fight as if they were zero. We do not know what we are facing, so we fight as if it was the dark gods themselves. No one will remember us now and we may never be buried beneath Titan, so we will build our own memorial here. The Chapter might lose us and the Imperium might never know we existed, but the Enemy - the Enemy will know. The Enemy will remember. We will hurt it so bad that it will never forget us until the stars burn out and the Emperor vanquishes it at the end of time. When Chaos is dying, its last thought will be of us. That is our memorial - carved into the heart of Chaos. We cannot lose, Grey Knights. We have already won."
~Acting-Brother-captain Alaric of the Grey Knights
?Sunday is a fixed star," he said.
"You shall see him a falling star," said Syme, and put on his hat.
The decision of his gesture drew the Professor vaguely to his feet.
"Have you any idea," he asked, with a sort of benevolent bewilderment, "exactly where you are going?"
"Yes," replied Syme shortly, "I am going to prevent this bomb being thrown in Paris."
"Have you any conception how?" inquired the other.
"No," said Syme with equal decision.?
~G.K. Chesterton, The Man Who Was Thursday
"I leave Sisyphus at the foot of the mountain! One always finds one's burden again. But Sisyphus teaches the higher fidelity that negates the gods and raises rocks. He too concludes that all is well. This universe henceforth without a master seems to him neither sterile nor futile. Each atom of that stone, each mineral flake of that night filled mountain, in itself forms a world. The struggle itself toward the heights is enough to fill a man's heart. One must imagine Sisyphus happy. "
~Albert Camus, The Myth of Sysiphus
"What lighting did you want in this bit?"
After a thoughtful pause Sara said "It should look like strawberries and cupcakes."
"Strawberries and cupcakes? So. . ." the stage hand stared at his equipment as though they might offer some translation.
"Red with a white fill?" he asked.
Sara wrinkled her brow and considered his answer and finally said "Show me."
The stage hand quickly produced the light he described and Sara's eyes opened with the sort of joy generally only known by children.
"Perfect!" she shouted.
-Sara, Overhead conversation with some artistic license.
The first stands as a monument to face the impossible without flinching. The second reminds me that one should never let a lack of a perfect plan prevent action. The third is a reminder that the struggle itself is often the important bit. The last is because it so neatly encapsulates the personality of my girlfriend.