If you think in terms of a year, plant a seed; if in terms of ten years, plant trees; if in terms of 100 years, teach the people.
When coal came into the picture, it took about 50 or 60 years to displace timber. Then, crude oil was found, and it took 60, 70 years, and then natural gas. So it takes 100 years or more for some new breakthrough in energy to become the dominant source. Most people have difficulty coming to grips with the sheer enormity of energy consumption.
For me, any kind of thing that has stood for 100 years tells me of the health of that thing. So, cinema completing a hundred years in India just says that it is very healthy.
I often joke that 100 years from now I hope people are saying, 'Dang, she looks good for her age!'