User blog comment:FairyRaven/Fairy Tail Chapter 428: When We Take Different Paths, Review and Commentary/@comment-147.4.36.65-20150415073946/@comment-7418318-20150416170528

I wish someone would say something along these lines to Gray:

"Do you think Silver gave you this power for hurting your friends, watching your friends getting hurt by your allies and letting innocent die? Do you really think that he wanted you to throw your life and happiness away to avenge him?"

I think that has a better chance to get through to him than yet another friendship speech that he heard time and again and even gave on occasion... though the question is if anyone has enough knowledge of what went down between Gray and Silver to be able to say those words.