India is determined not to make the Paris climate meet like past summits where nations returned with "false optimism and fictitious hopes" and would ensure that rich countries pay back their "debt for overdraft" drawn on the carbon space.The statement comes a day before the crucial high level segment gets underway where ministers of 195 countries will deliberate on the draft negotiating text which emerged to reach a final agreement to tackle the challenge of climate change.Environment minister Prakash Javadekar who arrived in Paris to attend the high level segment said that although nations are "midway" in their journey to reach a new climate agreement, substance-wise it is "sometimes at crossroads" while hinting at the various unresolved issues which remain in the draft negotiating text.Noting that the United Nations Framework Convention for Climate Change (UNFCCC) is a "fundamental global climate constitution", India also made it clear that any attempt to rewrite or to overwrite will "not be acceptable". Javadekar said that the country will ensure that the seminal principle of Common But Differentiated Responsibilities (CBDR) is respected.