This world is not conclusion

This world is not conclusion;

A sequel stands beyond,

Invisible, as music,

But positive, as sound.

It beckons and it baffles;

Philosophies don't know,

And through a riddle, at the last,

Sagacity must go.

To guess it puzzles scholars;

To gain it, men have shown

Contempt of generations,

And crucifixion known.