Hailing the Constitution as a "living stream", Prime Minister Narendra Modi on Tuesday said it is acting as a "guiding light" at a time when India is going through a period of transformation. Addressing an event marking Constitution Day celebrations at the Supreme Court, Modi also paid homage to the victims of the Mumbai terror attack and reiterated the country's resolve that all terror groups challenging the security of India will be given a befitting reply. Recalling the words of Rajendra Prasad in his concluding address to the Constituent Assembly on November 26, 1949, Modi said he had stated that India does not need anything more than a group of honest people who will keep the country's interests above their own. "This sentiment of 'nation first' will keep alive the Constitution for centuries to come," he said. Modi said the Constitution has now been fully implemented in Jammu and Kashmir and Constitution Day was celebrated there for the first time there. "Our Constitution mak