R. D. Laing

If I don't know I don't know, I think I know. If I don't know I know, I think I don't know.
If I don't know I don't know, I think I know. If I don't know I know, I think I don't know.
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These are some quotes by Scottish author R. D. Laing Psychologist, who lived between October 7, 1927 and August 23, 1989.