Mourns-For-Trees from the Hive in PS:T.
He just wants us to believe that the dying trees can heal, so that hopefully they will.
Then we come back with other companions and ask them to please believe with us.
As a hopeless idealist I thought this simple quest was brilliant and I wish I knew who wrote it.
I actually took a screenshot of the dialogue though it doesn't show all the possible answers...
http://i.imgur.com/mHmry.jpg
This is one of the differences between this game and others. Others use side-quests as filler.
Here we don't have to kill or find, it's a one minute extra, just to make us think and wonder.
Yet there it is. Simply perfect.
