P.D. Ouspensky
Author: P.D. Ouspensky
Publisher: Vintage (1971)

In the beginning you cannot know which is 'I' and which is false personality. What you call 'I' is a complicated structure, and so is false personality. You cannot know everything about either of them; but if you take from one side something you have no doubt about that it is false and from the other side something you have no doubt about that it is true, you can compare them