Once Nick gets to his feet, he'll ask if you're okay - wrap up the conversation then prepare to leave.
Finally, decide if you want Nick's company as you search for Virgil - we'll be taking him with us, so consider doing the same. You'll notice a change in his tone - so ask about Kellogg and see if he has any ideas about tackling the Glowing Sea. Join Valentine by the doorway to the north and engage him in conversation.