"Life has value when you don't know what tomorrow brings."
Here's a breakdown:
* "La vida tiene valor" means "Life has value"
* "cuando no se sabe lo que trae mañana" means "when you don't know what tomorrow brings"
The phrase is a philosophical statement about appreciating the present moment and living life to the fullest, as you never know what the future holds.
It suggests that life's beauty and significance are heightened by the uncertainty and surprise that each day brings.