Bhaagvad Geeta, Chapter II, verse 47:
Karmanyevaadhikaaraste maa phaleshu kadaachana,
Maa karmaphalheturbhurma te sangostvakarmani
This is the most important lesson that Krishna teaches Arjun, as Arjun's advisor in the Kurukshetra War. Arjun is forced to face his brothers - the Kauravs, his respected teachers, his friends and his elders in a war to win the throne of Hastinapur and in his despondency refuses to move his chariot when the war is announced by the blowing of the conches on both sides. He laments to Krishna that what is the use of gaining a kingdom if it means death of his loved ones. He would rather beg for alms than slay his own people.
Hearing Arjun's weak-heartedness, Krishna then goes into a discourse on the fight for righteousness and explains one of the best lessons of the war in this verse.
Krishna tells Arjun that he has the responsibility to act when he sees adharma happening, but he should not act with an eye on the fruits of his action. He should never engage in action for its reward, nor should he attach himself to inaction.
Radhika heard the same words from Kaanha (her conscience) today. Kaanha chastised her for her inaction and encouraged her to take the path of righteousness, though she may face plenty of difficulties choosing that path.
Radhika is well versed in the scriptures from Babuji's nurture and her conscience will lead her down the path where there are many obstacles but she cannot stand by and watch in inaction like she did surrendering to Vishakha's demands. She has to choose a road less travelled and face the difficulties if she wants to keep adharmic Vishakha away from Dev and the Purohits.
Edited by gardes - 15 years ago