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I actually put this book down for a few years about 2/3rds of the way into it. The reason being was that I just got tired of it; the plot wasn't moving forward quickly enough and not a whole lot was happening. It didn't seem like the story was going anywhere. Thankfully, I came back to it to finish it and after about 20 pages it got pretty amazing. Asimov's perspective on the unknown is beautiful. His ideas with regards to science fiction are refreshingly original, and his commentary on love and relationships is incredibly wise. I would suggest it, but it is difficult to get through the first portion of the book. It has a very large rising action, a tiny climax, and a very steep falling action. Not to say I was dissatisfied, but with all the build up I was expecting the resolution to be more drawn out. He has a little tribute to his Foundation series at the end too, love it.