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Only around 2% of the earth's surface is cultivatable land.

In the rush of today's world, and with more than half of us now living in cities, the majority of people are less and less connected with the spectacle of nature.

The world's major metropolitan cities are more or less the same.

Taking the entire globe, if North America and Western Europe can be called the 'cities of the world', then Asia, Africa and Latin America constitute 'the rural areas of the world'.

The people on this planet that are trying to live their life, that aren't trying to destroy things, are in the 99.9-percent majority.

I just think cities are unnatural, basically. I know there are people who live happily in them, and I have cities that I love, too. But it's a disaster that we have moved so far from nature.

Fifty percent of our country that we own, have all legal jurisdiction, have all rights to do whatever we want, lies beneath the sea and we have better maps of Mars than that 50 percent.

Currently, Boston has only nine percent of the state's population - but we provide more than 16 percent of the jobs and 19 percent of the state's revenues.

Africa is underpopulated. We have 20% of the world's landmass and 13% of its population.