Recreation (1919) 
Context: I am not attempting here a full appreciation of Colonel Roosevelt. He will be known for all time as one of the great men of America. I am only giving you this personal recollection as a little contribution to his memory, as one that I can make from personal knowledge and which is now known only to myself. His conversation about birds was made interesting by quotations from poets. He talked also about politics, and in the whole of his conversation about them there was nothing but the motive of public spirit and patriotism. I saw enough of him to know that to be with him was to be stimulated in the best sense of the word for the work of life. Perhaps it is not yet realised how great he was in the matter of knowledge as well as in action. Everybody knows that he was a great man of action in the fullest sense of the word. The Press has always proclaimed that. It is less often that a tribute is paid to him as a man of knowledge as well as a man of action. Two of your greatest experts in natural history told me the other day that Colonel Roosevelt could, in that department of knowledge, hold his own with experts. His knowledge of literature was also very great, and it was knowledge of the best. It is seldom that you find so great a man of action who was also a man of such wide and accurate knowledge. I happened to be impressed by his knowledge of natural history and literature and to have had first-hand evidence of both, but I gather from others that there were other fields of knowledge in which he was also remarkable.
                                    
        ““There’s only one way to guard a secret so effectively that no one can misuse it to his own advantage and the detriment of others,” Kennedy mused slowly, “And that’s to give it away—make it open knowledge. Give it to everybody.”
“Scientists have known that for a long time,” Hoskins said, “That’s why we keep insisting on free trade of ideas.””
    
    
    Source: They'd Rather Be Right (1954), p. 180.
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Mark Clifton 23
American writer 1906–1963Related quotes
Source: Why People Don't Heal and How They Can: A Practical Programme for Healing Body, Mind and Spirit
                                        
                                         "The Free Universal Encyclopedia and Learning Resource" (1999) http://www.gnu.org/encyclopedia/free-encyclopedia.html 
1990s
                                    
                                        
                                        Letter to Nele van de Velde ((daughter of Henry van de Velde), Frauenkirch, 29 November 1920; as quoted in Letters of the great artists – from Blake to Pollock, Richard Friedenthal, Thames and Hudson, London, 1963, pp. 224-225 
1920's
                                    
                                        
                                         BBC Today programme https://www.bbc.co.uk/news/av/uk-40667879/eu-trade-deal-easiest-in-human-history (20 July 2017) 
2017
                                    
Source: They'd Rather Be Right (1954), p. 92.
The Aquarian Conspiracy (1980), Chapter Four, People Changing
                                        
                                         Speech https://api.parliament.uk/historic-hansard/commons/1886/jun/07/second-reading-adjourned-debate in the House of Commons (7 June 1886) introducing the Home Rule Bill 
1880s
                                    
As quoted in Philosophy for a Time of Crisis : An Interpretation, with Key Writings by Fifteen Great Modern Thinkers (1959) by Adrienne Koch, Ch. 18, "Karl Jaspers : A New Humanism"