On making the movie, Born Free:
"Most of the people of the [filming] unit were extremely nice and friendly, but their way of life was not mine. There were too many dramas and 'goings-on' for my peace of mind. I felt safer with the lions."
On "enrichment" for captive animals:
"I am firmly convinced that it is the boredom and frustration of captivity which makes [captive] lions dangerous. One of their strongest senses is that of smell. To deprive them of the chance to exercise it is tantamount to depriving a human being of all reading matter."