From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free.

For most of history, man has had to fight nature to survive; in this century he is beginning to realize that, in order to survive, he must protect it.

We are living in an interminable succession of absurdities imposed by the myopic logic of short-term thinking.

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

The idea of a group of elders is that, in past civilizations, they have linked worlds; the other world was also present in this one. There is also the argument that elders have "experience." The problem is that experience teaches fear of change. Experience kills imagination. Experience makes people conservative. What we are facing tomorrow requires the force of imagination, not wisdom from yesterday.

What is a scientist after all? It is a curious man looking through a keyhole, the keyhole of nature, trying to know what's going on.

In order to save the planet it would be necessary to kill 350,000 people per day.