“Today’s society was not the natural form in which human life evolved; it was a creation of already mentally developed man, without which he couldn’t conceive of his own existence. What is being proposed is, therefore, whether the human being will be able to survive the privilege of having a creative intelligence.”
“No one but he was able to interpret the depth and essence and all the value of the Marxist theory. No one but he was able to interpret that theory and see it through to the bitter end. No one but he was able to develop it and enrich it the way he did.”
"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."

“We will make use of computers, not to create weapons of mass destruction and exterminate people but to convey knowledge to other peoples. From the economic point of view, the development of the intelligence and conscience of our fellow citizens, made possible by the Revolution, allow us not only to aid those in most need at no cost to us, but also to export specialized services, including healthcare services, to countries that have more resources than our own. In this field, the United States will never be able to compete with Cuba.”

"Ideas are born of knowledge and ethical values. An important part of the problem would be technologically solved, another must be cultivated restlessly. Otherwise, the most basic instincts shall prevail".

“The trend towards the privatization of knowledge and the internalization of scientific research companies subordinated to big capital has been creating a kind of "scientific apartheid" which affects the vast majority of the world's population.”