1960s, Beyond Vietnam: A Time to Break Silence (1967) 
Context: War is not the answer. Communism will never be defeated by the use of atomic bombs or nuclear weapons. Let us not join those who shout war and, through their misguided passions, urge the United States to relinquish its participation in the United Nations. These are days which demand wise restraint and calm reasonableness. We must not engage in a negative anticommunism, but rather in a positive thrust for democracy, realizing that our greatest defense against communism is to take offensive action in behalf of justice. We must with positive action seek to remove those conditions of poverty, insecurity, and injustice, which are the fertile soil in which the seed of communism grows and develops.
                                    
“Atomic war is inevitable. It will destroy half of humanity: it is going to destroy immense human riches. It is very possible. The atomic war is going to provoke a true inferno on Earth. But it will not impede Communism.”
            Attributed 
War is Not the End of the World, 1972
        
Help us to complete the source, original and additional information
J. Posadas 5
Argentine Trotskyist (1912-1981) 1912–1981Related quotes
                                        
                                         Review of Voodoo Planet: Solar Queen, book 3 by Andre Norton http://jamesdavisnicoll.com/review/oh-andre-norton-no, 2015 
2010s
                                    
                                        
                                        Martin Bentham, "You're the boss, Tony", The Sun, 28 May 1997, p. 2. 
Speech at a summit in Paris between NATO and Russia, 27 May 1997. 
1990s
                                    
                                        
                                        The Key to the Universe (1977) 
Context: In a sense, human flesh is made of stardust.
Every atom in the human body, excluding only the primordial hydrogen atoms, was fashioned in stars that formed, grew old and exploded most violently before the Sun and the Earth came into being. The explosions scattered the heavy elements as a fine dust through space. By the time it made the Sun, the primordial gas of the Milky Way was sufficiently enriched with heavier elements for rocky planets like the Earth to form. And from the rocks atoms escaped for eventual incorporation in living things: carbon, nitrogen, oxygen, phosphorus and sulphur for all living tissue; calcium for bones and teeth; sodium and potassium for the workings of nerves and brains; the iron colouring blood red… and so on.
No other conclusion of modern research testifies more clearly to mankind’s intimate connections with the universe at large and with the cosmic forces at work among the stars.
                                    
                                        
                                        Responding to President George W. Bush remarks on Iran, November 21, 2007  https://www.reuters.com/article/us-venezuela-chavez-bush/chavez-says-bush-belongs-in-asylum-for-ww3-comment-idUSL2062324220071120 
2007
                                    
“Christians should urge our government to destroy all its atomic bombs”
                                        
                                        What Does God Want Us to Do About Russia? (1948) 
Context: We Christians should urge our government to destroy all its atomic bombs, stop making any additional ones, and stop all preparations to wage war with biological weapons. Such actions would... place our government in an advantageous position to plead with all other nations to join with us in an international treaty of disarmament by as rapid stages as possible.
                                    
                                        
                                        44 min 50 sec 
Source: Cosmos: A Personal Voyage (1990 Update), Blues For a Red Planet [Episode 5] 
Context: The beauty of a living thing is not the atoms that go into it, but the way those atoms are put together. Information distilled over 4 billion years of biological evolution. Incidentally, all the organisms on the Earth are made essentially of that stuff. An eyedropper full of that liquid could be used to make a caterpillar or a petunia if only we knew how to put the components together.