For Pretzel... in response to her blog "laughter"
And for everyone else... for the heck of it 
Your joy is your sorrow unmasked.
And the well from which your laughter rises was often filled with your tears.
And how else can it be?
The deeper that sorrow carves into your being, the more joy you can contain.
When you are joyous, look deep into your heart and you shall find it is only that which has given you sorrow
...