"Baru has praised the PM and the government during the UPA-I when he used to be the PM's adviser between 2004-2008, ironically, he raised his concerns on the same PM when he left the office. So, I find the book fundamentally contradicting," said Tharoor.
He told reporters after the launch of a book "The New Indian Middle Class, the Challenge of 2014 and Beyond" written by former diplomat Pavan K Varma in the capital.
"The middle class is capable of utilising its energy and anxiety in right direction, it is passionate about every issue it is facing. Since the class is going to play an integral role in the general elections, they need to be cautious," said Tharoor.
Lauding Varma for highlighting the issues, the scenario and the position of the Indian middle class ahead of general elections in his book, he said Varma has successfully compiled their causes in an excellent manner which is highly appreciated.
"When Anna Hazare raised the concerns related to the middle class, they united and thronged the streets to support him, expecting a sudden change. They also showed their anger during Nirbhaya protest in Delhi," said Varma.
This is not a political book but has a political message for people, said Varma.