"...Anyone can be cruel, if... driven by the wrong things." It hurts to say it, to admit what could be the problem- no, that's not right either. The problem hasn't changed, it's always been him. But the catalyst, the reason behind it... is admitting that it's Sigmund the same as placing some of the blame on his shoulders? Because that's not what he wants.

...Still.

"I've... always tried to push people to admire you, to respect you the way I do. I could never fathom why anyone would treat you less reverently, after everything I'd witnessed. I forget that- that most others haven't seen what I have." And more than that- "...Most others... don't think the way I do." Or feel, but that complicates things more than he wants to get into. Keep it simple, keep it on topic. "I should have supported our comrades, not antagonized them. I know this now."

He's been trying, he's come so far since that time- since Capell saved him, opened his eyes. It's a curse and a blessing that Sigmund never had to see him fall so far, but he never saw how he climbed back out of that hole.