Speaking at the silver jubilee function of Symbiosis Institute of International Business (SIIB), Mr Prabhu said a lot of people give advice on railways.
"Some say, why are you not making a profit out of the railways. Another person will complain of charging so much. Somebody will ask why the food is not as good as the food we get in five-star hotels and at the same time, the next person will ask why are you charging Rs 100 for a meal," he said.
"If there is any educational institute, which is going to teach how to manage the railways, it should really be qualified to get a Noble Prize, because managing the railways is so complex," quipped Mr Prabhu.
"We can do better than them, provided we do everything, Chinese and Japanese did 30-40 years ago. China invested 140 billion dollars year after year," he said.
Mr Prabhu said the Modi government has stepped up investment in the railways.
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