I first read Dune as a teenager in the 60s soon after it was published. I thought at that time that it was a masterpiece. I just finished re-reading for the first time since then to see how it has held up. In some respects it has weathered the decades well, in others, not so much. Herbert wisely wrote it as soft science fiction with devices to justify the antiquated technology. For example, tremendous advances in defensive technologies had forced a reversion to low-tech swords and knives. This gives the novel a timeless quality. It’s visionary theme of ecology and restoration of a desert environment makes it more topical than ever in the era of climate change and desertification. However, in the critical aspect of social justice it feels like something from another era. Thousands of years from now, white males dominate the universe. Women are pawns who have formed a secret society to influence men. The villain is a homosexual, the only one in the book. These are very serious flaws, which for many modern readers will render it worthless. However, these are not overt, but simply implicit assumptions that many people shared in the early 1960’s when he was writing it, and are not directly relevant to the themes of the book. There is no overt racism, and some positive characters are not white. For example, the admirable Fremen appear to be similar to Bedouins. There is no overt sexism. Several of the principal characters are very strong women. There is no overt homophobia, though no positive examples of gay characters are depicted. So, it seems to me that the flaws are not fatal, and the book retains some, but not all, of the qualities that I enjoyed more than 50 years ago. I hope the new film version will update it.