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

We must go and see for ourselves.

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.

The awareness of our environment came progressively in all countries with different outlets.

Farming as we do it is hunting, and in the sea we act like barbarians.

Mankind has probably done more damage to the Earth in the 20th century than in all of previous human history.

Our society is turning toward more and more needless consumption. It is a vicious circle that I compare to cancer . . . . Should we eliminate suffering, diseases? The idea is beautiful, but perhaps not a benefit for the long term. We should not allow our dread of diseases to endanger the future of our species. . . . In order to stabilize world population, we need to eliminate 350,000 people a day. It is a horrible thing to say, but it's just as bad not to say it.