Mbh 12.180.2d

Men are reduced by men to a state of servitude, and are repeatedly afflicted (at the hands of their own species) with death, imprisonment, and other tortures. Although such is their condition, yet even they (without yielding to grief) laugh and sport and indulge in merriment. Others again, though endued with might of arms, and possessed of knowledge and great energy of mind, follow censurable, sinful, and miserable professions. They seek to change such professions for other pursuits (that are more dignified) but then they are bound by their own acts (of a previous life) and by the force of Destiny. The vilest man of the Pukkasa or the Chandala orders never wishes to cast off his life. He is quite contented with the order of his birth. Behold the illusion in this respect! Beholding those amongst thy species that are destitute of arms, or struck with palsy, or afflicted with other diseases, thou canst regard thyself as very happy and possessed of valuable accompaniments amongst the members of thy own order. If this thy regenerated body remains safe and sound, and free from disease, and all thy limbs remain perfect, thou art sure of never incurring any reproach amongst men. It would not behove thee, O Brahmana, to cast off thy life even if any blame, founded on fact and capable of bringing about thy dismissal from caste, attached to thee! Rise, and practise virtue. It is not meet that thou shouldst throw away thy life! If, O regenerate one, thou listen to me and place credence on my words, thou wilt then obtain the highest reward of the religion inculcated in the Vedas. Do thou set thyself to Vedic studies, and duly maintain thy sacred fire, and observe truth, and self-restraint, and charity. Never compare thyself boastfully with another. They who, by devoting themselves to the study of the Vedas, become competent for performing sacrifices for themselves and others, have no need to indulge in any kind of regret or fear any kind of evil.