136 Each practice is in itself a demon which must be destroyed; but to be destroyed it must first be evoked. Shame upon that Master who shirks any one of these practices, how- ever distasteful or useless it may be to him ! For in the detailed know- ledge of it, which experience alone can give him, may lie his opportunity for crucial assistance to a pupil. However dull the drudgery, it should be undergone. If it were possible to regret anything in life, which is fortunately not the case, it would be the hours wasted in fruitful practices which might have been more profitably employed on sterile ones : for NEMO ^ in tending his garden seeketh not to single out the flower that shall be NEMO after him. And we are not told that NEMO might have used other things than those which he actually does use; it seems possible that if he had not the acid or the knife, or the fire, or the oil, he might miss tending just that one flower which was to be NEMO after him! 1 NEMO is the Master of the Temple, whose task it is to develop the beginner. See Liber CDXVIII, Aethyr XIII.