BENGALURU: In his final annual general meeting (AGM) as chairman and managing director of Wipro , Azim Premji said he has always believed in Mahatma Gandhi 's dictum that we must remain 'trustees' of our wealth for society, not its owners.He noted that he has irrevocably renounced more of his personal assets and earmarked them to the endowment that supports the Azim Premji Foundation 's philanthropic activities.The total value of the philanthropic endowment corpus contributed over time is 1.5 lakh crore, which is 67% of the economic ownership in Wipro. Premji will retire as chairman on July 30.In an extraordinary innings, he transformed a small cooking oil company that his father started in 1945 into a $25 billion market cap global IT powerhouse.Premji said this year marks the 75th year of creating value for Wipro stakeholders."Wipro was established in 1945. It is an important milestone and we have pride in how Wipro has grown as an exemplar of a successful, ethical and a socially responsible organisation," he said.Outside of his contribution to IT, Premji has touched thousands of lives through his philanthropic contributions. And his canvas has only grown with time.In the US, The Wipro Science Education fellowship, which it started in 2013, works in seven sites across 35 school districts on improving STEM learning in schools serving disadvantaged communities.Premji said it’s quite clear that climate change is one of the greatest challenges that human-kind has ever faced. “It is equally clear that businesses must fully contribute to tackling this challenge. Wipro has led the business community on climate action over the past decade. This year, we have significantly scaled up the use of renewable energy for our operations, which now contributes 40% of our total consumption. Recycled water now contributes to 42% of our total water usage,” he said.Premji expressed confidence in his son and chief strategy officer Rishad Premji who will take over as Wipro chairman from him. “Rishad brings to this role new ways of thinking, broad experience, and competence that will lead Wipro to greater heights. He is also completely committed to the values which form the bedrock of Wipro,” he said.