Shuka said What is that Knowledge? Is it that learning by which, when error is gone, the truth reveals itselt? Or, is it those duties consisting of acts to be done or achieved, by the help of which the object sought for, may be understood or attained? Or, is it those duties, called absention from acts by which an extinction of the Soul is to be sought? Do tell me what it is, so that by its help the two, viz., birth and death, may be avoided.