220. and 221. The conch-fish may eat and assimilate various things, animate, inanimate, and mixed, and yet the white colour of its shell cannot be changed into black by the things assimilated. In the same way the enlightened Knower may enjoy various objects, animate, inanimate, and mixed, and yet his nature of knowledge cannot be converted into nescience by the things so enjoyed.

222 and 223. The very same conch-fish (irrespective of the fact whether it eats other things or not) may intrinsically undergo change of colour, when the white-shell will be changed into black one. Similarly the enlightened Knower (who remained uninfluenced by the things enjoyed) may undergo deterioration in himself by which he lose his nature of knowledge and assume one of nescience.