We All know that Robotte Guilliam wrote the Codex Astartes. But other Primarchs also wrote their ideas down. For example Leman Russ. Do any of you know where snippets of his writings can be found.

Pallomides said:

Chiselled into some rocks?

I find it more likely the inhabitants of Fenris rely on oral traditions, since paper would be easily destroyed and even stone could be lost to the ocean and heaving crust. So any writings of Russ would likely be second-hand at best accounts from non-Fenrisian sources. Perhaps crusade-era remembrancers?

Decessor said:

As far as has been seen in the Horus Heresy novels, the Space Wolves didn't have much in the way of dealings with the Order of Remembrancers; I imagine that the bulk of Space Wolves lore exists only in the memories of Rune Priests and Dreadnoughts.

Wake up Bjorn the Fellhanded, or track down some of the 13th Company and ask them, in the novels they seem to be full of awesome anecdotes about Russ and other historical and military datum.

As has been mentioned Leman Russ don't strike me a the kind of guy who writes his stuff down. The closest thing I would imagine that you could get is to have stories told about him in an educational manner among the Space Wolves.

The second edition 40k rulebook had a lot of quotes from Leman Russ that are now attributed to other sources, such as the Tactica Imperium. Arguably, his wisdom may have been simply opted by some of the greater Imperial Guard tacticians, or the fluff was officially changed, or somebody just forgot the origins of his words... if you assume it's all three at the same time, you get a fairly good insight of the way the 40k universe works

My guess is that you won't find (without a lot of digging - no pun intended) many of the words of our favourite Space Wolf primarch. You may end up having to come up with a fair amount of it yourself. Remember that the appearance that Russ tried to cultivate was that of a howling dervish, because it frightened his weaker enemies and it kept his stronger enemies oblivious to his intelligence - and that Russ considered nearly anyone not of his gene-stock a potential enemy. Far from the savage viking idiot he pretended to be, he was ruthless, cunning and patient. He wasn't a viking raider, he was the Emperors personal executioner and he had plans to be able to take down any of the other primarchs... even the loyalist ones if he had to.

With all that in mind, how I'd be doing this is by reading some sagas to get a feel for the flow of narrative and the way that these quotes would have been remembered by the chapter (mainly by the dreadnoughts, especially those old enough to remember Russ) and then using that style of writing to paraphrase quotes from Sun Tzu.

And, of course, if you go it, post the results here so we can all steal them as well

I haven't read much of the Space Wolf parts of the HH novels yet but I guessed that might be the case.

I'm currently reading Njal's Saga with its talk of legal codes and spiralling cycles of vengeance and murder. Fun stuff!

Some viking sayings (from the Havamal).

"Remember that the appearance that Russ tried to cultivate was that of a howling dervish, because it frightened his weaker enemies and it kept his stronger enemies oblivious to his intelligence - and that Russ considered nearly anyone not of his gene-stock a potential enemy. Far from the savage viking idiot he pretended to be, he was ruthless, cunning and patient. He wasn't a viking raider, he was the Emperors personal executioner and he had plans to be able to take down any of the other primarchs... even the loyalist ones if he had to."

This was explained superbly in Prospero Burns. I found some stuff in the Lexicanum:

"You strive for victory. That is obvious. What may be less obvious is the nature of victory. There are circumstances in which you can destroy the enemy utterly, without loss to your own forces, and yet the victory may be his. In all situations, you must first decide on the nature of victory, and then take steps to secure it. Avoid the instinct of fight first and think later." (Meditations, Book VI)

"A fortress circumvented ceases to be an obstacle. A fortress destroyed ceases to be a threat. Do not forget the difference." (attributed)5

"A fortress is built with blood and toil. Only by blood and toil may it be taken." (attributed)5

"Beat your thoughts to the mould of your will." (attributed)6

"Listen closely Brothers, for my life's breath is all but spent. There shall come a time far from now when our Chapter itself is dying, even as I am now dying, and our foes shall gather to destroy us. Then my children, I shall listen for your call in whatever realm of death holds me, and come I shall, no matter what the laws of life and death forbid. At the end I will be there. For the final battle. For the Wolftime." (last words of Leman Russ the Primarch of the Space Wolves Chapter of Space Marines)7

"Only in the Space Marines of the Legiones Astartes are courage and expertise perfectly blended. In other troops they are present in varying degrees and proportions, and many scholars have debated their relative merits.
For my own part, I come down on the side of courage. For courage can sometimes make a virtue of inexperience. I myself have commanded Imperial Guard troops whose probitor units have achieved great things, because they were too inexperienced to realise that their goal was impossible." (Leman Russ on the military use of Whiteshields, De Natura Belli, Book XIV)4

"There are those who undervalue the Penal Battalions. But they should consider this: should a man who has wronged the Emperor be allowed to wrong Him further? For each man executed is a man who can no longer serve, and to fail in service to the Emperor is the greatest of sins." (Meditations on Imperial Command, Book XXI)4

"Do not underestimate the Squats. They survived for millennia cut off from the Imperium and assailed from all sides. Their determination and resilience is an example to all." (Meditations on Imperial Command, Book XVI)4

"Harden your soul against decadence. But do not despise it, for the soft appearance of the decadent may be deceptive. One need only consider the Harlequin dancers of the Eldar to see the truth of this proposition." (A Book of Admonitions for the Legiones Astartes)4

"Here I am and here shall I die." (attributed to Leman Russ at the Battle of Rising Fell)