One moral lesson that can be learned from the story of "Ramayana" is loyalty to family and, more specifically, to siblings. In the story, Lakshman gave up the life he was used to and live in the forest for 14 years just to be with his brother Rama.
Another important moral of the story is protecting the weak, which was exhibited by Jatayu, an old demigod who has taken the form of a vulture. When Ravana kidnapped Sita, Jatayu disregarded his old age and fought Ravana, resulting in his death. Because of this deed, Rama was moved by the aged creature's courage amid overwhelming odds.