Doshi, the first Indian to win the prestigious Pritzker Prize, architecture's highest honour, said the last six to seven decades have been a constant discovery for him.
The 90-year-old architect started working on low-cost housing in the beginning of his decades-long career, much before affordable housing became a regular theme in government policy documents.
Doshi told PTI in an interview that his constant pre- occupation over the years have been to resolve issues related to cities, urbanisation and living space.
He then went on to design numerous institutions like IIM-Bangalore, CEPT Ahmedabad, NIFT Delhi and Aranya Low Cost Houses in Indore which houses 80,000 inhabitants.
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Doshi said designing buildings for institutes is an effort to "create transitional spaces for people to connect and disconnect and go into reflective mood".
Doshi spoke about his idea of a "smart city", saying anything "smart" for him is "integral, efficient, uses less energy, gives more choices, is more and more independent and self-sustainable."
"Architecture is not a product. It is made to suit the conditions or styles or predilections of the users. When we talk about that, the whole question is: is the user comfortable, or is he going to really be very happy? Would you like to go back to the place?" he said.
Taking a trip down the memory lane, Doshi said environment has been an important factor in his scheme of designs.
"Last 60-70 years have been a constant discovery for me. Since I have been doing various projects and resolving issues connected to cities, urbanisation, living space, my concerns have always been how do we upgrade lifestyle, upgrade quality for life, really become helpful, and assist people who have not much resources.
"Second, I look at environment, as to how one creates an environment where people like to go again and again, where they would notice the seasons, see animals and birds around them."
Elaborating on his design process, the nonagenarian said he looks at design as an integration of climate, earth elements, and movement of shadows.
"I'd see how light filters around when the sun light comes, and how the wind blows in so that you feel comfortable. Then comes the earth: how do you relate with the earth, the way you plant trees.
He said institutions should look like one's second home.
"Institutions must look like a second home. They are not just merely rooms. You go there because it is a place of interactions, place of reflection, place of questioning and wondering, and also a place where you gradually sensitise.
"For example, School of Architecture at CEPT University: It was a waste land. If you go there today, it has nice mounds, trees, gardens, so everyone who comes there say, 'my god, what a place'!, so they want to come often," he said.
"And it should make you question what is the meaning of what I am doing, and is it going to benefit people or not," he added.
"Institutions must give time to students and teachers to ponder and question. Spaces there have to be connected to nature and all the forces around. You induce in them some kind of feeling of silence which would lead them to questioning," he said.
For Doshi, low-cost housing schemes are designed with an understanding that they should not only be affordable but also take into account availability of scarce resources and funds made available for them.
"If cement is scarce, if you don't have concrete and not much fund, what would you do with minimum cost? So I use local technology, material, crafts, and create buildings out of them so they become very simple to live but very pleasant to be in. Then I create clusters out of them," Doshi said.
Doshi's architectural designs are also defined by traditions.
"My buildings, whether low-cost or expensive, use elements which we have been using long long ago in our traditions. All our old houses were like that. They were designed on the basis of the activities and our life style."
"And then I plan the structure which must have proper volume, proper light, it must be cool in summer, pleasant in winter," he added.
Ruing the rapid, unplanned urbanisation, Doshi said what is being talked about is creation of buildings without any sense, or "circumstantial development," as he puts it, as against "planned development."
"Today, we are not talking of urbanisation, not even hybridisation, but creating building without any sense. We are doing is circumstantial development, not planned development."
"Smart cities should be holistic, and take all the factors into account: the land, the place where people will stay, where they will work, how they rejoice the place, what should they do in holidays, what kind of life would they have. Do they would they have playgrounds, open spaces, recreation, something to do with health?," he said.
He lamented that developers have adversely affected the spirit of architecture, as they seek their "own pound of flesh" for the job they offer to new breed of architectures.
"For example, the other half we are talking about here: slums and people (living) on footpaths. We are isolating from these issues and trying to create buildings and call them architecture," he signed off.