Board Thread:Warhammer 40k General Discussion/@comment-58.179.157.107-20140511083958/@comment-26066352-20160305023801

I believe part of the Emperor's choice of Horus was simply that he felt Horus was the most loyal to him, the one that would understand what had to be done and what the Great Crusade was meant to be. That's the irony of it all, the most loyal of his sons turned out to be the Arch-Traitor.