“Soft words soften the hearts that are harder than rock, harsh words harden hearts that are softer than silk.”
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Abu Hamid al-Ghazali 37
Persian Muslim theologian, jurist, philosopher, and mystic 1058–1111Related quotes

An Intimate History of Humanity (1994)
Context: Even Gandhi, with all his charisma, did not "melt the hearts" of his oppressors, as he had hoped. After softening, hearts harden again. Asoka too was wrong to think that he was changing the course of history, and that his righteousness would last "as long as the sun and the moon."

“I rock a beat harder than you could beat it with rocks”
"313"
1990s, Infinite (1996)

Foreword
Historia Calamitatum (c. 1132)
Context: Often the hearts of men and women are stirred, as likewise they are soothed in their sorrows, more by example than by words. And therefore, because I too have known some consolation from speech had with one who was a witness thereof, am I now minded to write of the sufferings which have sprung out of my misfortunes, for the eyes of one who, though absent, is of himself ever a consoler. This I do so that, in comparing your sorrows with mine, you may discover that yours are in truth nought, or at the most but of small account, and so shall you come to bear them more easily.

“Refugees have done more for my heart and my spirit than I can ever express in words. ”

“His heart; some long word at the heart. He is dying of a long word.”
Source: Brideshead Revisited: The Sacred and Profane Memories of Captain Charles Ryder
Act II
A Man for All Seasons (1960)

“When you pray, rather let your heart be without words then your words without heart.”
Variant: In prayer it is better to have a heart without words than words without a heart.