“Does the walker choose the path, or the path the walker?”
            Quoted various times by different characters in all three books. 
Old Kingdom series (The Abhorsen Trilogy) 
Source: Sabriel
        
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Garth Nix 88
Australian fantasy writer 1963Related quotes
“Every walker is a guard on patrol to protect the ineffable.”
Source: Wanderlust: A History of Walking
“Good walkers can go anywhere in these hospitable mountains without artificial ways.”
                                        
                                        letter to Howard Palmer (12 December 1912); published in William Federic Badè,  The Life and Letters of John Muir http://www.sierraclub.org/john_muir_exhibit/life/life_and_letters/default.aspx (1924), chapter 17, II 
1910s
                                    
“When you choose the path, you choose the destination.”
                                        
                                        2008-11-11 
Threshold Editions 
141659485X 
244 
2000s 
Source: The Christmas Sweater
                                    
Column: Jo Cox MP - “Our libraries are a lifeline.” http://www.batleynews.co.uk/news/local/column-jo-cox-mp-our-libraries-are-a-lifeline-1-7432052 (31 August 2015)
“Of the two, I choose the ascending path.”
                                        
                                        The Saviors of God (1923) 
Context: Which of the two eternal roads shall I choose? Suddenly I know that my whole life hangs on this decision — the life of the entire Universe.
Of the two, I choose the ascending path. Why? For no intelligible reason, without any certainty; I know how ineffectual the mind and all the small certainties of man can be in this moment of crisis.
I choose the ascending path because my heart drives me toward it. "Upward! Upward! Upward!" my heart shouts, and I follow it trustingly.
                                    
                                        
                                        As quoted in  "Sidelight on Sports: A Baseball Star is Born" https://news.google.com/newspapers?id=d5dRAAAAIBAJ&sjid=52sDAAAAIBAJ&pg=1293%2C4057980 by Al Abrams, in The Pittsburgh Post-Gazette (June 7, 1955), p. 20 
Comment:  1994 interview with Vera Clemente https://www.google.com/search?tbo=p&tbm=bks&q=%22Roberto+Enrique+Clemente%22+intitle:Remember+intitle:Roberto&num=10 confirms that Enrique was Clemente's middle name; the discrepancy in spelling is presumably due to a misunderstanding by the non-Spanish-speaking Abrams, mistaking the word "Si" for the letter c. 
Other, <big><big>1950s</big></big>, <big>1955</big>
                                    
                                        
                                        Remarks at the  Conservative Political Action Conference (25 February 2002) http://www.truthout.org/docs_04/031104A.shtml. 
2002