"Don’t wait for things to happen. Make them happen."

"I always thought there were going to be things in my life that would go away, like beauty, youth, all of that stuff…But I never thought that my voice would leave me, because it’s so inherent to my nat…"

"Almost all of the social tragedies occurring around the world today are caused by ignoring the basic biological laws of nature ... The quicker we humans learn that saving open space and wildlife is cr…"

"Firstly what does conservation mean? It is not merely the saving from extinction of such species as the Notornis, the Leadbetters Possum or the Leathery Turtle; this is important work but it is only p…"

"And that is the real force of my earlier insistence on empiricism. My brand of empiricism does not insist that we must have fully compelling grounds for the things we believe, or indeed that we can fi…"