In the souls of the people the grapes of wrath are filling and growing heavy, growing heavy for the vintage.

It has always been my private conviction that any man who puts his intelligence up against a fish and loses had it coming.

I am impelled, not to squeak like a grateful and apologetic mouse, but to roar like a lion out of pride in my profession.

Man, unlike anything organic or inorganic in the universe, grows beyond his work, walks up the stairs of his concepts, emerges ahead of his accomplishments.

I think the days of the climate deniers are over. To deny basic science is to risk the trust of the general public.

Everyone has a different opinion; every country has a different way of doing things. But I do believe that we need a regulatory body so that everyone who owns or manages wildlife is subject to inspection and rated on how well they look after the animals and how the communities benefit.

A primary function of art and thought is to liberate the individual from the tyranny of his culture in the environmental sense and to permit him to stand beyond it in an autonomy of perception and judgment.

We need new technology to fight climate change and that will come from the private sector.