There are many windows through which we can look out into the world, searching for meaning. There are those opened up by science, their panes polished by a succession of brilliant, penetrating minds. Through these we can see ever further, ever more clearly, into areas that once lay beyond human knowledge. Gazing through such a window I have, over the years, learned much about chimpanzee behaviour and their place in the nature of things. And this, in turn, has helped us to understand a little better some aspects of human behaviour, our own place in nature. But there are other windows; windows
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