Riddle
My first is in everything there to be known,
My second's in ending, a way to be shown,
My third is in worlds that are strange, and so, true,
My fourth is in losing (to gain something new?),
My fifth's in enticing, an object of lust,
My sixth is in sadness and darkness and dust,
My seventh's insanity once was sunshine,
My whole is eternal, an unbroken line.