Part

 1 I |   those even who are the most difficult to satisfy in everything
 2 II|   truth where it is at all of difficult discovery, as in such cases
 3 II|    that it is almost quite as difficult to effect a severance of
 4 II|     conclusions of their most difficult demonstrations, had led
 5 II|   formerly deemed exceedingly difficult but even as regards questions
 6 V | greater consistency, are more difficult to compress; and also that
 7 VI|    and minute as to be highly difficult to detect. ~But in this
 8 VI|  discovered is in itself more difficult and recondite, than that
 9 VI|      step by step to the more difficult, will benefit them more
10 VI|     as to make it exceedingly difficult to disentangle the truth