In plain words
Just as study is needed to grow one's intelligence, right conduct is essential to grow one's knowledge. In childhood, along with learning, one must possess humility, obedience, devotion, faith and diligence. In youth, one should not merely earn wealth or manage society, but should cultivate good conduct and character, righteous and spiritual sentiments, and shape one's mind accordingly. In maturity, it is not enough merely to support one's community and family — one should cultivate ethics and honesty, provide one's own children with an exemplary life, and demonstrate such good conduct in society. One should not defy society and make the support of one's own family alone one's aim.
Neither birth, nor refinement, nor study of the Vedas is the cause of realizing Brahman — conduct alone is the root cause. Whoever is born must, sooner or later, meet death; this is unavoidable. Every minute in this world, countless people are being born, and countless people are dying. One might well wonder how death could be done away with — but the Ātma is never born at all, and for the unborn Ātma there is no death. Here, death belongs only to the body that has joined and united with desire. Union with the body is itself death; falling into delusion is itself death, and freedom from delusion is itself immortality. That which meets death is the body alone, not the Ātma. The body is forever changing, and whatever undergoes change cannot escape perishing. To mistake this perishable body alone for 'I', fall into delusion, remain devoid of Jñāna, and die in that state is unworthy of a human being.
As the soul increases its Jñāna through the performance of action, its bodies transform and continuously attain a higher evolution. In a raw tamarind pod, it is not easy to separate the shell, pulp, fibres and seeds from one another. In the same way, Jñāna does not take hold in those who are attached to sense-objects and identified with the body. But in a ripened tamarind pod, the shell and everything else easily fall away from the fruit within — just so, body-identification falls away and departs from the Ātma. Then the Ātma becomes visible, clear and pure.