This summer holidays I traveled around my country and I toke a couple of hours reading. I read 3 books and the winner was the latest book of Taleb, "fooled by randomness".
It is really a "must read" book, even if your are not in the investing industry. His scientific approach to the randomness is great and after you read this book you will see the world with different glasses.
Success can happen by chance, unexpected things happen. You will never know everything. These are 3 principles we must allways remember and adopt a strategy to survive in this environment. We can't change it but we can live with it.
Be ready also to discover some of the pitfall of statistics.
Best reading of summer. For sure!