Of the Pâtañjala school of Sâ@mkhya, which forms the subject of the Yoga with which we are now dealing, Patañjali was probably the most notable person for he not only collected the different forms of Yoga practices, and gleaned the diverse ideas which were or could be associated with the Yoga, but grafted them all on the Sâ@mkhya metaphysics, and gave them the form in which they have been handed down to us. Vâcaspati and Vijñâna Bhik@su, the two great commentators on the _Vyâsabhâ@sya_, agree with us in holding that Patañjali was not the founder of Yoga, but an editor. Analytic study of the sûtras brings the conviction that the sûtras do not show any original attempt, but a masterly and systematic compilation which was also supplemented by fitting contributions. The systematic manner also in which the first three chapters are written by way of definition and classification shows that the materials were already in existence and that Patañjali systematized them. There was no missionizing zeal, no attempt to overthrow the doctrines of other systems, except as far as they might come in by way of explaining the system. Patañjal is not even anxious to establish the system, but he is only engaged in systematizing the facts as he had them. Most of the criticism against the Buddhists occur in the last chapter. The doctrines of the Yoga are described in the first three chapters, and this part is separated from the last chapter where the views of the Buddhist are __________________________________________________________________ [Footnote 1: The Yoga writer Jaigî@savya wrote "_Dhâranâs'âstra_" which dealt with Yoga more in the fashion of Tantra then that given by Patañjali. He mentions different places in the body (e.g. heart, throat, tip of the nose, palate, forehead, centre of the brain) which are centres of memory where concentration is to be made. See Vâcaspati's _Tâtparya@tîkâ_ or Vâtsyâyana's bhâ@sya on _Nyâya sûtra_, III. ii. 43.] 230 criticized; the putting of an "_iti_" (the word to denote the conclusion of any work) at the end of the third chapter is evidently to denote the conclusion of his Yoga compilation. There is of course another "_iti_" at the end of the fourth chapter to denote the conclusion of the whole work. The most legitimate hypothesis seems to be that the last chapter is a subsequent addition by a hand other than that of Patañjali who was anxious to supply some new links of argument which were felt to be necessary for the strengthening of the Yoga position from an internal point of view, as well as for securing the strength of the Yoga from the supposed attacks of Buddhist metaphysics. There is also a marked change (due either to its supplementary character or to the manipulation of a foreign hand) in the style of the last chapter as compared with the style of the other three.