From Burnet's Note on the Sources
A work of this kind was, of course, a godsend to the epitomators and compilers of handbooks, who
flourished more and more as the Greek genius declined. These either followed Theophrastos in
arranging the subject-matter under heads, or else they broke up his work, and rearranged his
statements under the names of the various philosophers to whom they applied. This latter class form the
natural transition between the doxographers proper and the biographers, so I have ventured to
distinguish them by the name of biographical doxographers.