It Must Be So (From "Candide")

My world is dust now
And all I loved is dead
Oh let me trust now
In what my master said
There is a sweetness
In every woe
It must be so
It must be so
The dawn will find me
Alone in some strange land
But men are kindly
They'll give a helping hand
So said my master
And he must know
It must be so
It must be so