The System of the Vedanta according to Badarayana's Brahma-Sutras and Cankara's Commentary c7.s3.t7.19

c7.s3.t7.19

“But was not from the fact that no external things are possible, the conclusion drawn that it only seems as if they were outside?—[p. 571] Yes, but this conclusion is not justified. For we determine what is possible or impossible, from what is proved or not proved; we do not, however, in the "opposite way, determine what is proved or not proved, from "what is possible or impossible. For what we apperceive "through one of the instruments of knowledge, perception, etc. "(above p. 88) is possible (or: real, *sambhavati*), and what we "do not apperceive, through any means of knowledge, is not "possible (real). External objects are, according to their "kind, apperceived by all means of knowledge; how then can "anyone, on the basis of such arbitrary reflections as those "concerning exceptions and non-exceptions [dream and waking], "maintain that they are not possible, since they are apper"ceived!"