That very assumption has helped the aged Vulcan keep mum on more than a few things he had not wished to disclose to his past-companions. It is a bit of an unfair disadvantage when one knows intimately how someone else thinks better than they do thanks to years of experience.

"You would be correct. The best one can do in such a situation is to offer as little but as accurate advice as is necessary when such things from my past do factor back into the present of the new timeline to avoid further destruction and to allow their lives to play out as they see fit at all other times. The past self I have met will never become me. Our lives have gone on divergent paths in ways I cannot begin to forsee."

But when familiar foes do arise, ones that brought his companions to the brink of destruction in his time...then he has broken that vow and done his best to help them. It feels as though they are owed a better chance after everything they've already been made to endure.

"It is a very lonely life to be stuck in an alternate timeline, in any case. But not altogether without reward."