Lyric discussion by Mystrocool 

Cover art for The Spirit Of Radio lyrics by Rush

Not sure if this is obvious or not but the last 3 lines are a reference to Simon and Garfunkel's "Sound of Silence". The lines from that are:

And the sign said, "The words of the prophets are written on the subway walls And tenement halls" And whispered in the sounds of silence

interesting tidbit about this song.

Song Comparison

@Mystrocool Thanks. I thought that line sounded familiar from somewhere, but I couldn't make the connection.