Water and air, the two essential fluids on which all life depends, have become global garbage cans.

Sometimes we are lucky enough to know that our lives have been changed, to discard the old, embrace the new, and run headlong down an immutable course

When we return wild animals to nature, we merely return them to what is already theirs. For man cannot give wild animals freedom, they can only take it away.

I swam across the rocks and compared myself favorably with the sars. To swim fishlike, horizontally, was the logical method in a medium eight hundred times denser than air. To halt and hang attached to nothing, no lines or air pipe to the surface, was a dream. At night I had often had visions of flying by extending my arms as wings. Now I flew without wings. (Since that first aqualung flight, I have never had a dream of flying.)

There are no boundaries in the real Planet Earth. No United States, no Soviet Union, no China, no Taiwan...Rivers flow unimpeded across the swaths of continents. The persistent tides - the pulse of the sea - do not discriminate; they push against all the varied shores on Earth.

The biggest obstacle was mixing abortion with overpopulation. These are two things that have nothing to do with each other.

We have to prepare for what life could become in 40 years. We need to outline what is possible and what is impossible with the non-renewable resources of the Earth. What role will technological improvement play? Taking all this into account, what kind of life can we produce in the best way for 10 billion people? That's a problem that needs to be solved.