"Arousing some sentimental issues or remembering Lord Ram and Sardar Vallabh Bhai Patel after 60 years will not help," Kumar told reporters when asked to comment on BJP's 'run for unity', a brainchild of Narendra Modi.
He said a person named as Prime Ministerial candidate needed to make public his views on substantive issues.
"What should be our relations with neighbouring countries? How to reclaim the land under control of China and Pakistan? What is your plan for uplift of an economically poor state like Bihar?" he sought to know. "Instead of addressing these issues just doing some artificial talks will not pay any dividend," Kumar said.
Nitish slams Modi for BJP'S 'Run for Unity'
Asked about the chances of Congress naming Rahul Gandhi as its Prime Minister nominee, he said, "It's an internal matter of the party and I am nobody to comment on what decision they take."
On the Congress being unhappy with his meeting with YSR Congress chief Jaganmohan Reddy over the creation of Telangana, the Bihar Chief Minister justified the move and said, "We are running a political party and do not take direction from anybody on what to do and what not to do."
Kumar who had an-hour-long meeting with Jagan Reddy here on Friday evening, said he had a valid point in protesting the division of Andhra Pradesh to create a new state of Telanganga without consulting the state Assembly which violated the spirit of Article 3 of the Constitution. "Bihar, Uttar Pradesh and Madhya Pradesh were earlier reorganised, but state Assemblies were consulted over creation of new states," he said.