Grieving and Loss

How to comfort a friend when he is experiencing great loss and grief in his life ?
To comfort is to help the person recognize reality, as well as to help the person, to start again and to have faith. All this through solidarity and a comforting conduct, but not by instilling a false superiority. It is important to understand that all grieving takes time and also, to appreciate everything that was constructive because the experiences and teachings learned in the path, stay, since good, truly, does not die.