We know not why

We know not why the roles of yesterday
were played,
Nor why tomorrow’s greatest dreams
are never lived.
We know not yet why blood was spilled 
and children cried,
(All the children God has made
have cried)
Nor why tomorrow blood and tears
will flow again.
But this we know:
Now this we know:
In a little room, in a little house,
we make love today.