"People are exploiting nature and sustainable development can only be achieved through conservation. Mother Earth is our home and everybody has to work toward preserving the ecological system.
"In an attempt to develop the economy everyone thinks about money and in turn are exploiting nature. But the real economic development only comes through sustainable development," he said.
The Dalai Lama was addressing a gathering at the tenth T N Khoshoo Memorial Award and Lecture on "Sacred Values and Conservation".
The Dalai Lama also stressed on the need to reduce the gap between the rich and poor in India as "it is morally wrong", he said.
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"Whenever I see homeless people on the street begging my heart gets pained. The rich have more than they need and the poor don't even have the basic amenities which inturn makes them feel jealous of the rich. Why such discrimination?" he lamented, calling for efforts to upliftment the poor.
The Dalai Lama said he disapproves of the idea of splurging money on elaborate marriage functions.
"People spend so much during the marriages just to show their status and wealth. And then after some time, some of the marriages fail and people divorce. This is like cheating God as you take the oath to be with your partner lifelong at the time of marrying him/her," he said.
He suggested that instead of elaborate celebrations during marriage time, a couple tying the knot should provide one time meal to the poor "as a meaningful practice".