I read Anarchy State, Natopia by Nozick when I was 22, 21, 22. That just blew my mind when I was like 13, 14 in reading this material. He also is less edamard of it than he's gone now, but my understanding is he did not agree with the book as he got older. So authors have complex notions about their own work. But toward the very end of his life, I think he came back to it much more than in sort of the middle period. that's my sense.