The estimation of life

"Man cometh into life, and returneth again into death. Three men in ten conserve life; three men in ten pursue death. Three men also in ten desire to live, but their acts hasten their journey to the house of death. Why is this? Because of their efforts to preserve life. But this I have heard. He that is wise in the economy of his life, whereof he is warden for a season, journeyeth with no need to avoid the tiger or the rhinoceros, and goeth uncorsleted among the warriors with no fear of sword or lance. The rhinoceros findeth in him no place vulnerable to its horn, the tiger to its claws, the weapon to its point. Why is this? Because there is no house of death in his whole body."