(1) Relationship between Dharma, Artha, Kama and Moksha
Human life is consumed in chasing materialism (Artha) and sense pleasures (Kama). Ramayana makes it clear that these two pursuits should never be at the cost of Dharma (righteousness). In withholding dharma, both artha and Kama can be and must be sacrificed. The ultimate goal of life is Moksha (liberation) and it can be attained only by relinquishing Artha and Kama and by strictly following a life of Dharma.
(2) The importance of one man being wedded to only one wife
During Ramayana period, polygamy was quite prevalent and it was quite an acceptable social norm for kings to marry many women. Rama 's own father Dasaratha was wedded to 3 wives (queens) and he had innumerable concubines at his palace. In a stark contrast to his father, Rama remained wedded and staunchly loyal to his only wife Sita. With this qualification, he held his head high as the greatest king ever ruled in Bharat (India). He set example for future generations of men as to what constitutes a sterling quality for the respectability of a man in society.
(3) Adherence to truth and the need to honor one 's word
When Rama was a young boy, the love and affection his father Dasarata had on him was immense. He would never like to be separated from his son. But when he had promised to offer whatever help that the visiting Sage Viswamitra asked for and when the sage requested for Rama 's help to fight the demons at the forest, Dasarata was terribly shocked. But still, he agreed to part with Rama, to honor his promise.
Later in time, when his third wife Kaikeyi wanted the throne of Ayodhya for her own son Bharata and wanted Rama to be sent in exile to the forest, it was nothing short of a deathly blow to Dasarata. But still, he could never use his kingly authority to veto her request, because of the promise he had made long ago to Kaikeyi, to grant her two boons whenever she chose to ask.
(4) Respecting