began to perceive how much reality there is in the work of Wagner, when I saw in my mind’s eye those insistent, fleeting themes which visit an act, withdraw only to return, and, sometimes distant, drowsy, almost detached, are at other moments, while remaining vague, so pressing and so near, so internal, so organic, so visceral, that one would call them the resumption not so much of a musical motive as of an attack of neuralgia.