No, haven’t read that one yet—now I have something to look forward to ;)
I just finished his “The Day After Tomorrow”. I like Heinlein’s theme of freedom against slavery in many of his books.
Makes one think—especially these days with He-Who-Shall-Not-Be-Mentioned-Lest-I-Ruin-A-Perfectly-Good-Saturday as POTUS.
If you like Heinlein’s theme of freedom, I think you will like “Time Enough for Love.” Be warned that it is also about sexual freedom so it’s pretty futuristic at times, but the main character is quite a character. I live by some of his maxims. In the end, the book is about the triumph of love.