I read this book in the 1970s when it was published in Finnish, and I was maybe 13 years old. Now somebody mentioned it on Mastodon and I decided to read it again, in English.

It contains many good ideas, a lot of which apply well to world politics today. Like the idea that problems can be easily solved by pretending they don't exist. But the depiction of women is definitely not from this century. Even female (?) aliens are less intelligent, but have more empathy than the less female aliens. The naked women on the Moon with I still remember from the 1970s.