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

Q. Does one have to sacrifice anything besides 'all nonsense' in order to attain higher states? A. 'Nonsense' is perhaps a good word. But when you sacrifice it, it is not nonsense for you. Objectively it may be nonsense, but if you felt it to be nonsense there would be no sacrifice.