Swami Vivekananda on duty of soul

Hinduism indicates one duty, only one, of the human soul. It is to seek to realize the permanent amidst the evanescent. No one presumes to point out any one way in which this may be done. Marriage or non-marriage, good or evil, learning or ignorance, any of these is justified, if it leads to the goal. In this respect lies the great contrast between it and Buddhism, for the latter's outstanding direction is to realize the impermanence of the external, which, broadly speaking, can only be done in one way.