8.5/10. One of the all-time greats of scifi. I’ve now read 2-3 times over the years a fact that is itself testament to its quality (very little scifi justifies a reread let alone a rereread). I include here the wonderful Litany Against Fear (p. 19 of Dune)
The Bene Gesserit Littainy Against Fear
I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.