2p29c.md (745B)
1 Hence it follows that the human mind, when it 2 perceives things after the common order of nature, has not an 3 adequate but only a confused and fragmentary knowledge of itself, 4 of its own body, and of external bodies. For the mind does not 5 know itself, except in so far as it perceives the ideas of the 6 modifications of body (II. xxiii.). It only perceives its own 7 body (II. xix.) through the ideas of the modifications, and only 8 perceives external bodies through the same means; thus, in so 9 far as it has such ideas of modification, it has not an adequate 10 knowledge of itself (II. xxix.), nor of its own body (II. 11 xxvii.), nor of external bodies (II. xxv.), but only a 12 fragmentary and confused knowledge thereof (II. xxviii. and 13 note). Q.E.D. 14 15