"In the days after Isstvan, I saw my brothers frantically resorting to cybernetics. They claimed that weakness resides in flesh, that our father had preached the superiority of metal to our deaf ears. I did not think it possible but, during that time, my heart sank lower than what I thought possible since the death of Ferrus...
Yet I've managed to draw something from our tragedy and, in employing that new knowledge, to now stand before you the way our father would've truly wanted...coated in iron.
What is metal without flesh, brothers? What good is a blade lying inert in an armoury without a kindred warrior spirit to wield it? How does the best suit of Power Armour defend the Imperium without a Marine's heart bringing it to life against our foes? Is a Titan's potencial truly fulfilled without a princeps to meld with it?
Indeed, brothers, we are meant to become one with iron and steel, but not by replacing what makes us more. What makes us human. What makes us Astartes. What allows us to feel seething, pure, righteous hatred against those who've betrayed us.
We have ships. We have guns. We have blades and tanks and the hulls of Dreadnoughts from whence our revered brethren inspire us to greater feats. We have no shortage of steel with which to deliver our righteous vengeance to Fulgrim and his debauched lot. It falls to us to show them our flesh cuts just as deep."
Godfried of the Iron Hands
Hope you like Tinman, had a lot of fun drawing him. Cheers.
PS: If you think his speech is rather moderate, remember he's a Pre-Heresy character.