Nothing hinders a thing from being natural so much as the straining ourselves to make it seem so.
Francois de La Rochefoucauld

Natural science, does not simply describe and explain nature; it is part of the interplay between nature and ourselves.
Werner Heisenberg

Thence, I suppose, my natural disposition to make fresh acquaintances, and to break with them so readily, although always for a good reason, and never through mere fickleness.
Giacomo Casanova

You need to feel that the game is important to you. Lose that feeling and you lose your edge. There's no faking that kind of emotion. You can't invent the feeling. It's got to be natural, real.
Dan Marino

Zoos are becoming facsimiles - or perhaps caricatures - of how animals once were in their natural habitat. If the right policies toward nature were pursued, we would need no zoos at all.
Michael J. Fox

I'm not a natural leader. I'm too intellectual; I'm too abstract; I think too much.
Newt Gingrich

It seems to me that the natural world is the greatest source of excitement; the greatest source of visual beauty; the greatest source of intellectual interest. It is the greatest source of so much in life that makes life worth living.
David Attenborough

I like animals. I like natural history. The travel bit is not the important bit. The travel bit is what you have to do in order to go and look at animals.
David Attenborough

The whole of science, and one is tempted to think the whole of the life of any thinking man, is trying to come to terms with the relationship between yourself and the natural world. Why are you here, and how do you fit in, and what's it all about.
David Attenborough

An understanding of the natural world and what's in it is a source of not only a great curiosity but great fulfillment.
David Attenborough

In the old days... it was a basic, cardinal fact that producers didn't have opinions. When I was producing natural history programmes, I didn't use them as vehicles for my own opinion. They were factual programmes.
David Attenborough

You can only get really unpopular decisions through if the electorate is convinced of the value of the environment. That's what natural history programmes should be for.
David Attenborough

Being in touch with the natural world is crucial.
David Attenborough

People must feel that the natural world is important and valuable and beautiful and wonderful and an amazement and a pleasure.
David Attenborough

We can understand, too, that natural species are chosen not because they are 'good to eat' but because they are 'good to think.'
Levi Strauss

It's also natural in that part of the world to blame what people view as the... as the most important authority in the region, and that currently is the United States of America.
John Abizaid

In my own case, who have spent my whole life in the practice of virtue, right conduct from habitual has become natural.
Sallust

Happiness is the natural flower of duty.
Phillips Brooks

There is a Passion natural to the Mind of man, especially a free Man, which renders him impatient of Restraint.
George Mason

The natural principle of war is to do the most harm to our enemy with the least harm to ourselves; and this of course is to be effected by stratagem.
Washington Irving