In the first stage of boyhood he is led from ignorance and 'innocence' into the world of knowledge when he is accepted as a pupil by a Guru (Preceptor). After that he has to serve the Guru and obey him without feeling burdened and bound. In the second stage of youth he has to share with society the means and measures for its progress and security, he has to start earning for his livelihood and spending his income with intelligent care, he has also the duty of providing examples to those younger than himself and guide them into socially useful paths. At the same time he must follow the footsteps of elders and learn from them lessons for his own advancement.