Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 615.
“Too long a sacrifice
Can make a stone of the heart.
Oh, when may it suffice?”
St. 4
Michael Robartes and the Dancer (1921), Easter, 1916 http://poetry.poetryx.com/poems/1477/
Variant: Too long a sacrifice
Can make a stone of the heart.
Source: Easter 1916 and Other Poems
Help us to complete the source, original and additional information
W.B. Yeats 255
Irish poet and playwright 1865–1939Related quotes

Bingen on the Rhine.

“Throw your stones (Wo-oh-oh-ohhh)
We can hold our own (Wo-oh-oh-ohhh)
I don't need no microphone”
"Microphone" (song)
("Microphone" on YouTube (with lyrics)) https://www.youtube.com/watch?v=zTeGbn0CDh4
Studio albums, Playing in the Shadows (2011)

O Black and Unknown Bards, st. 6.
Fifty Years and Other Poems (1917)

“Sticks and stones may break our bones, but words will break our hearts.”
Source: All I Really Need to Know I Learned in Kindergarten (1986)
Context: Yelling at living things does tend to kill the spirit in them. Sticks and stones may break our bones, but words will break our hearts.