“Well, then, why should I listen to my heart?"
"Because you will never again be able to keep it quiet.”

As quoted in "Notes Among the Indians", Putnam's Magazine (October 1869), p. 476
Context: I always feel well while I am among these friends of mine, the Witchitas, Wacoes, and affiliated bands, and I never feel afraid to go among the white men here, because I know them to be my friends also. … I come from a point on the Washita River, about one day's ride from Antelope Hills. Near me there are over one hundred lodges of my tribe, only a part of them are my followers. I have always done my best to keep my young men quiet, but some of them will not listen. When recently north of the Arkansas, some of them were fired upon, and then the war began. I have not since been able to keep my young men at home.

Variant: You will never be able to escape from your heart. So it's better to listen to what it has to say.
Source: The Alchemist

Said in a tweet https://twitter.com/MollyMEP/status/1165533573195227136 on 25 August 2019 <br class="br">2019

Source: Dream of the Red Chamber (1958), p. 161

Source: Angus, Thongs and Full-Frontal Snogging

Homecoming saga, The Memory Of Earth (1992)

Source: The Alchemist

Source: The Secret Diaries of Miss Miranda Cheever

A statement written soon after the end of World War II, as quoted in René Char : This Smoke That Carried Us : Selected Poems (2004) edited by Susanne Dubroff