For Silvano Arieti, who wrote his major works from the 1950s through the 70s, the terms autistic thought and what he called paleologic thought are apparently the same phenomenon. Paleologic thought is a characteristic in both present-day schizophrenics and primitive men, a type of thinking that has its foundations in non-Aristotelian logic. An autistic child speaks of himself as "you" and not infrequently of the mother as "I".