"A great churning is taking place in the society following the incident. No government on earth can stop this kind of incident unless people have a different mindset," Tripathi said replying to a question on the prevailing situation in the city following the brutal gang-rape of the girl.
"The need of the hour is to bring change. Instead of blaming each other, we must try to do something concrete. The government must address the shortcomings but at the same time positive energy must come from all sides," he said.
Asked about crticism of Delhi Government following the incident, Tripathi said concerted efforts are needed to make systemic changes.
"I take a positive view of the incident. It is a wake-up call for all of us. I have two daughters, the Police Commissioner has two daughters. But that does not mean that women are safe. Let's make a safe Delhi," he said.
Tripathi, who was made Chief Secretary in April, 2011, retired today. He was succeeded by D M Spolia, an IAS officer of AGMUT cadre.
Asked about challenges he had faced, Tripathi said ensuring a "caring government" was top of his agenda.
Referring to CAG and Shunglu committee reports on Commonwealth Games irregularities, he said the government was successful in answering the queries to the two committees.