APPENDIX THE SOURCES OF THE FRAGMENTS.

The value of a quotation depends on two things, (1) the habit of accuracy in the person who quotes it, and (2) whether it is quoted from the original or from some intermediate source. Consequently the careful student of the early Greek philosophers, who depends wholly on quotations for his direct knowledge of these thinkers, cannot neglect the consideration of these two questions. Closely connected with the accuracy of quotations is the question as to the accuracy of later writers in the opinions which they have attributed to these thinkers. These topics I propose to consider very briefly, that the student may have at least some clue to guide him in his studies.