My Day (1935–1962) 
Source: This is My Story 
Context: If man is to be liberated to enjoy more leisure, he must also be prepared to enjoy this leisure fully and creatively. For people to have more time to read, to take part in their civic obligations, to know more about how their government functions and who their officials are might mean in a democracy a great improvement in the democratic processes. Let's begin, then, to think how we can prepare old and young for these new opportunities. Let's not wait until they come upon us suddenly and we have a crisis that we will be ill prepared to meet. (5 November 1958)
                                    
“If a man cannot enjoy the return of spring, why should he be happy in a labour-saving Utopia? What will he do with the leisure that the machine will give him?”
             "Some Thoughts on the Common Toad" http://www.k-1.com/Orwell/site/work/essays/commontoad.html, Tribune (12 April 1946) 
Context: Certainly we ought to be discontented, we ought not simply to find out ways of making the best of a bad job, and yet if we kill all pleasure in the actual process of life, what sort of future are we preparing for ourselves? If a man cannot enjoy the return of spring, why should he be happy in a labour-saving Utopia? What will he do with the leisure that the machine will give him?
        
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George Orwell 473
English author and journalist 1903–1950Related quotes
“He who does not give himself leisure to be thirsty cannot take pleasure in drinking.”
                                        
                                        Book I, Ch. 42 
Essais (1595), Book I
                                    
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 180.
“Giving is doing exactly the same work as God, thus making Him happy in return.”
“Logic only gives man what he needs. Magic gives him what he wants.”
Another Roadside Attraction (1971)
“The value of a man should be seen in what he gives and not in what he is able to receive.”
"The Application of Thought to Textual Criticism", a lecture delivered on August 4, 1921
“Man can do what he wills but he cannot will what he wills.”
                                        
                                        Der Mensch kann tun was er will; er kann aber nicht wollen was er will. 
Einstein paraphrasing Schopenhauer. Reportedly from On The Freedom Of The Will (1839), as translated in The Philosophy of American History: The Historical Field Theory (1945) by Morris Zucker, p. 531 
Variant translations: 
Man can do what he wants but he cannot want what he wants. 
As quoted in The Motivated Brain: A Neurophysiological Analysis of Human Behavior (1991) by Pavel Vasilʹevich Simonov, p. 198 
We can do what we wish, but we can only wish what we must. 
As quoted by Einstein in "What Life Means to Einstein: An Interview by George Sylvester Viereck" The Saturday Evening Post (26 October 1929) p. 17. A scan of the article is available online  here http://www.saturdayeveningpost.com/wp-content/uploads/satevepost/what_life_means_to_einstein.pdf (see p. 114). 
Attributed 
Source: Essays and Aphorisms