Talking is a hydrant in the yard and writing is a faucet upstairs in the house. Opening the first takes all the pressure off the second.

Letter to Sydney Cox (3 January 1937), quoted in Elizabeth Shepley Sergeant, Robert Frost: The Trial By Existence (1960), p. 351, and William Richard Evans, Robert Frost and Sidney Cox: Forty Years of Friendship (1981), p. 223