Every viewing of Listen has made me fall in love with it more than more. What a beautifully affecting episode of television. The Doctor's constant search to try and find this creature, to find the unknowable when he's really dealing with the turmoil inside himself is realized expertly. As most great episodes do, the moral center of the episode falls to Clara. No matter how many times I watch, her grabbing the child Doctor's ankle from under the bed still draws gasps every time, and she delivers an all-time beautiful speech. Never cruel nor cowardly indeed.