This is The Guardian.

There aren't many scientists who become universally loved, globally recognised icons. But Dr. Jane Goodall, the primatologist,

who died yesterday, aged 91, was one of them. Some of us could say, bonjour. Some of us could say

good Morgan and so on, but I can say, Oh, that's good morning in chimpanzee.

Jane was known for many things.

She was considered to be the leading expert on chimpanzees.

Her work observing their social behavior and Toyus revolutionised the way we thought of one of our

closest relatives and ourselves. Lewis Leakey sent me to Gombe because he believed that an understanding

of chimpanzees in the wild would help him to better guess how our Stone Age ancestors may have behaved.

It had long been thought that we were the only creatures on earth that used and made tools.

Man the toolmaker is how we were defined.

She was also an ecological activist,

a tireless and outspoken campaigner on environmental and animal rights.

We need to recognise at the outset that what we do to animals, from their perspective,

certainly, and probably from us, is morally wrong and unacceptable.

And that it's really important to follow through all these exciting new leads

into ways of doing research without using animals.

But Jane was also known for her optimism and intelligence,

her empathy, kindness and care towards the natural world,

and her humour.

When I was 10 years old, having always loved animals, I had saved up my pocket money and I got

a little book called Tazan of the Apes.

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