“[…] the human being, the human society are faced with the crucial necessity to advance at the same pace of the technological and scientific knowledge; the human society feels that vital necessity.”

“I trust in the intelligence of peoples and men. I trust in the need for humanity to survive. I trust that you, distinguished and patient members of this Parliament, will reflect upon this issue. I trust you will understand that this is not a matter of ideologies, races, colors, personal income or social classes; it is a matter of life or death for us all who sail in the same boat.”
"Humanity should be aware of what we have been so far and what we cannot continue to be. Presently, our species has enough accumulated knowledge, ethical values and scientific resources to move towards a new historical era of true justice and humanism."

“For the first time the human species is running a real risk of extinction due to the insane behavior of the very same human beings, who are thus becoming the victims of such "civilization". However, no one will fight for us, that is, for the overwhelming majority.”

"Cuba is today a source of inspiration and a beacon of hope for many. The revolution’s humanitarian goals and quest for justice are a point of reference for those who believe that a better world is possible and can replace the world of savagery, violence, egotism and squandering which the powerful have created".
"Humanity has to cope with very difficult problems.  I wish our species is not faced with disaster, and many of us could have a clear conscience for having done our best to prevent it".

“The bells are tolling today for those who are starving every day but tomorrow they shall toll for all of mankind if it did not want, did not know or could not be wise enough to save itself.”

 

“[…] it is in the unfair economic and political order imposed to the world where we should look for the real and fundamental cause of our lacking the necessary resources to build a more humane destiny for all of our children.”

"The wars between powers seem no longer a possible solution to the great contradictions as they were until the second half of the 20th century. Still, they have had such an impact on the elements that make human survival possible, that they could prematurely put an end to the existence of the current intelligent species that populates our planet."

"Our times are characterized by an unprecedented event: the threat to the survival of the human species imposed on the world by imperialism.
The painful reality should not come as a surprise to anyone. It could be seen rapidly advancing in the past few decades, at such a pace as it is hard to imagine."
"At this moment, humankind is facing serious problems without precedent. The worst is that to a large degree the solutions shall depend upon the richest and most developed countries, the countries that shall reach a situation which they are really in no condition to face unless the world they have been trying to mould for their egoistic interests crumbles around them and which inevitably leads to disaster.
 
I am not speaking about wars, whose risks and consequences have been transmitted by wise and brilliant people, including many Americans.
 
I am referring to the food crisis originating in the economic facts and the climatic changes that are apparently now irreversible as a consequence of the actions of man, but which, at any rate, human minds are under the obligation to face in a hurry. "