Dragon Age Warrior Guide
A Gift of Silence | Location: Denerim Market District (and, optionally, Redcliffe Village)
This is a rather interesting Mages' Collective side quest you can undertake, since there are two completely contrary paths through to the end of it. Indeed, the choice you make here will permanently affect the later outcome of a side quest you've yet to undertake, so think carefully here (though neither choice is necessarily right or wrong, so don't stress it too much). For starters, head to location A on your map. Here, you can find the Mages' Collective representative. Search the sack next to him to undertake this mission. The idea here is to deliver ten Lyrium Potions to a man in Redcliffe. And you can certainly do that. But we decided to make a completely different choice here, one that the game isn't too forthcoming with.
At location B in the Denerim Market District, the same place where the Mages' Collective is located, you can find a man named Knight-Commander Tavish. This guy isn't a friend of the rogue mages you've been working for through side quests like this, and if you offer up the side quest authorization, along with the lyrium potions you are to hand over, he'll thank you for your work and hand over a small reward for your trouble. And you'll be certain to see him again later. If you decide not to make this choice, then head to Redcliffe and seek out the man you're looking for there, named Knight-Commander Harrith. By speaking with him instead of Tavish, you'll stay in the permanent good graces of the Collective, but don't worry if you made the contrary choice, since you'll still be able to work for them regardless.