“A man on a thousand mile walk has to forget his goal and say to himself every morning, 'Today I'm going to cover twenty-five miles and then rest up and sleep.”

http://cerebusfangirl.com/artists/0805talk.php

Go Rin No Sho (1645), The Water Book

St. 4
Stopping by Woods on a Snowy Evening (1923)

Part Four, Ch. V (pp. 240-241)
The Good Soldier (1915)
Context: She asked him perpetually what he wanted. What did he want? What did he want? And all he ever answered was: "I have told you". He meant that he wanted the girl to go to her father in India as soon as her father should cable that he was ready to receive her. But just once he tripped up. To Leonora's eternal question he answered that all he desired in life was that — that he could pick himself together again and go on with his daily occupations if — the girl, being five thousand miles away, would continue to love him. He wanted nothing more, He prayed his God for nothing more. Well, he was a sentimentalist.

Source: Unsinkable: A Young Woman's Courageous Battle on the High Seas (2011), p. 196

"Stopping by Woods on a Snowy Evening" (1923) http://www.poetryfoundation.org/poem/171621
Variant: And miles to go before I sleep.
Context: The woods are lovely, dark and deep.
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep.

Variant: My grandmother started walking five miles a day when she was sixty. She's ninety-seven now, and we don't know where the heck she is.

Source: The Outsider (1956), Chapter Seven, The Great Synthesis...