"[The Space Marine Primarchs] shall be my sons, and in them will live the hopes of a unified Humanity. Theirs will be the strength to prevail, not only when victory lies within easy reach, but even when it seems unattainable, when doom settles like a shroud all about. In those times of darkness, my noble sons will shine the brightest of all."
January 1, 1970
https://en.wikiquote.org/wiki/Warhammer_40%2C000