“Men do not make history. Subjective factors can accelerate or delay major events, even for relatively long periods, but they are not a decisive factor, nor can they prevent the final outcome. Extremely serious accidents of human or natural origin, a nuclear war, the accelerated destruction of the environment and a relatively abrupt change in the climate can alter all estimates and forecasts made by the most visionary talents of our species. All of these things could still be avoided.”
“As a consequence of the climate change originated basically by the developed and wealthy countries, a shortage of fresh water and foods compatible with population growth at a pace that would lead to 9 billion inhabitants in a mere 30 years is being created, without the United Nations and the most influential governments on the planet, after the disappointing meeting at Copenhagen and Cancun warning and informing the world about that situation.”.
"(...) many things threatening the life of the planet today, aside from war, like climate changes, the destruction of the ozone layer, global warming, the poisoning of the air, the rivers and the seas. These things threaten the life of the entire planet, thus all of the peoples have a common cause with the people of Latin America, North America and Europe".
"The crisis will have an especially negative impact on the struggle for sustainable development, the preservation of the environment and the protection of nature from the merciless destruction to which it is being subjected, and which is causing the poisoning of the waters and the atmosphere, the destruction of the ozone layer, deforestation, desertification, and the extinction of animals and plants. How could this possibly not be taken into the slightest account?"
"Hardly 30 years ago, few people in the world discussed the environment. Ideas or themes linked to the destruction of the forests, soil erosion and salinity, climate change, the disappearing ozone layer, melting icecaps, whole cities and nations doomed to fatally disappear beneath the sea, polluted air and water; overexploited oceans seemed to be inventions of doomsday scientists and not pressing realities".
"World politics and economics moved forward at such a blind and chaotic pace that concepts like the environment, biological diversity, the preservation of nature, dessertification, holes in the ozone layer and climatic changes were barely known or even mentioned a few decades ago.
"They have poisoned oceans and rivers and contaminated the air; they have weakened and opened holes in the ozone layer and saturated the atmosphere with gases that impair climate conditions with catastrophic effects that we are starting to feel".
"Wastage and the capitalist consumer societies in their neo-liberal and imperialist phase are taking the world into a blind alley, where climatic change and the growing cost of foods lead billions of people towards more acute poverty levels".
"An important biological species is endangered due to the accelerated and progressive destruction of its natural living conditions: man".
“Today, the world is facing serious and pressing problems. The entire humanity is threatened by climate change. (...) The Third World countries are rightly claiming from the richest and most developed nations hundreds of billion dollars a year to pay for the climate battle”.