“A heart filled with anger has no room for love.”

Source: Adam Bede

Source: The Rapture of Canaan

Source: Dictionary of Burning Words of Brilliant Writers (1895), p. 47.

As quoted on the artist's Twitter Feed, March 16, 2013 https://twitter.com/josephpisaniart/status/312902833747943424

Note to the mother of Marcus Chown, who had admired the profile of Feynman presented in the BBC TV Horizon program "The Pleasure of Finding Things Out" (1981). Written after Chown asked Feynman to write her a birthday note, hoping it would increase her interest in science.
Photo of note published in No Ordinary Genius: The Illustrated Richard Feynman (1996), by Christopher Sykes, p. 161.
In a " Quantum theory via 40-tonne trucks http://www.independent.co.uk/arts-entertainment/books/features/quantum-theory-via-40tonne-trucks-how-science-writing-became-popular-1866934.html", The Independent (17 January 2010), and in a audio interview on BBC 4 (September 2010), Chown recalled the note as: "Ignore your son's attempts to teach you physics. Physics is not the most important thing, love is."

Righteous Wrath, st. 2 (January 1918).

From Are You the One for Me? (1992)

Quoted in Karl An unloving heart can no more understand a love-filled speaker than a German an Italian Bihlmeyer, Heinrich Seuse. Deutsche Schriften, Stuttgart 1907, p. 199