Of words and silences

"Never used an Unforgivable Curse before, have you, boy?" she yelled. "You need to mean them Potter! You need to really want to cause pain.."
-Bellatrix Lestrange (or JKR :) )

"It can’t be any new note. When you look at the keyboard, all the notes are there already. But if you mean a note enough, it will sound different. You got to pick the notes you really mean!"
-Thelonius Monk, pianist

And that is the meaning, perhaps, of why some silences can be so unifying, while others linger like the undead between the people that share them. What you mean with the silence is what makes the difference.