What is the book you have given most as a gift, and why?

It was not long after Kenneth Arrow's path-breaking study of social choice, Social Choice and Individual Values, was published in New York in 1951, that my brilliant co-student Sukhamoy Chakravarty drew my attention to the book and to Arrow's stunning "impossibility theorem" (this must have been in the early months of 1952). Sukhamoy too was broadly attracted by the left, but also worried about political authoritarianism, and we discussed the implications of Arrow's demonstration that no non-dictatorial social choice mechanism may yield consistent social decisions.

Unfortunately, I don’t. My wife now reads fiction. I don’t have the time to read fiction. My wife reads the fiction and summarizes it to me, but I wish at one point I’ll have time again to read fiction. It is a luxury I cannot afford right now.

I read Stephen Pinker's The Better Angels of Our Nature a few years ago and got to talk to him about it after, which was a lot of fun. I reviewed it for my blog, Gates Notes, because I wanted other people to read it, love it, and hopefully learn from it the way I did. It's probably my favorite book and the one I recommend most often.

When I was 16 years old, I read the book from Hans Selye. Hans Selye is a Canadian scientist, but he was Hungarian so his book was translated to Hungarian. His mantra was that you have to focus on things that you can change. Many young ones are giving up because they can see that their friends or their colleagues are advancing, and it seems that they do less and somehow, they get higher salary and promoted. I told that if you notice that then you already took away your attention what you can change. Because you cannot change that.