Knowing that not having a heart could lead him to do things that could be characterized as 'cruel' or 'unkind', he made deliberate attempts to reflect on his actions and ask himself, 'Am I behaving cruelly?' This is a description of mindfulness. It is humility.

It is a contradiction of those who are proud and confident and do not question their actions because they do not doubt their 'heart' and through their blindness can cause real harm to those around them.

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“Tell me and I'll forget; show me and I may remember; involve me and I'll understand.” -- Chinese proverb

The Wonderful Wizard of Oz is a children's novel written by L. Frank Baum and illustrated by W. W. Denslow (been told through many generations in these parts)

Baum in The South Dakota years
In July 1888, Baum and his wife moved to Aberdeen, Dakota Territory, where he opened a store, "Baum's Bazaar". His habit of giving out wares on credit led to the eventual bankrupting of the store, so Baum turned to editing a local newspaper, The Aberdeen Saturday Pioneer, where he wrote a column, Our Landlady. In December, 1890 Baum urged the wholesale extermination of all America's native peoples in a column he wrote on December 20, 1890, nine days before the Wounded Knee Massacre. (considering no radio or TV, local paper fairly well read)

Eyewitness account : Black Elk (1863–1950); medicine man, Oglala Lakota:
"I did not know then how much was ended. When I look back now from this high hill of my old age, I can still see the butchered women and children lying heaped and scattered all along the crooked gulch as plain as when I saw them with eyes young. And I can see that something else died there in the bloody mud, and was buried in the blizzard. A people's dream died there. It was a beautiful dream... the nation's hoop is broken and scattered. There is no center any longer, and the sacred tree is dead." Source: Black Elk Speaks, 1932.

One off many eyewitness accounts. Hotchkiss guns were used to mow down everyone including friendly fire. In all, 84 men, 44 women, and 18 children reportedly died on the field, while at least seven Lakota were mortally wounded. I understand some where chased for two miles and killed aswell, General Nelson A. Miles who visited the scene of carnage, following a three day blizzard, estimated that around 300 snow shrouded forms were strewn over the countryside.

Medal of Honor controversy
There are photos : Birds-eye view of canyon at Wounded Knee, dead horses and Lakota bodies are visible.
The Army awarded twenty Medals of Honor, its highest award, for the action. Native American activists have urged the medals be withdrawn, as they say they were "Medals of Dishonor". According to Lakota tribesman William Thunder Hawk, "The Medal of Honor is meant to reward soldiers who act heroically. But at Wounded Knee, they didn't show heroism; they showed cruelty." In 2001, the National Congress of American Indians passed two resolutions that condemned the Medals of Honor awards and called on the U.S. government to rescind them.
Historian Will G. Robinson noted that in contrast, only three Medals of Honor were awarded among the 64,000 South Dakotans who fought for four years of World War II.
Some of the citations on the medals awarded to the troopers at Wounded Knee state that they went in pursuit of Lakota who were trying to escape or hide

Unbelievable, and he writes children's fairy tales!. We quite like American Indian culture here lets hope there resolutions see the light of day.

Anyway in a hurry things to do, catch up later.

To nw3bk3y:

"Knowing that not having a heart could lead him to do things that could be characterized as 'cruel' or 'unkind', he made deliberate attempts to reflect on his actions and ask himself, 'Am I behaving cruelly?' This is a description of mindfulness. It is humility.

It is a contradiction of those who are proud and confident and do not question their actions because they do not doubt their 'heart' and through their blindness can cause real harm to those around them."

I thought the second paragraph of your post was very good. In the first paragraph, it seems to me that the person that you say who does not have a heart IS the person who has the heart. Because if he or she is worried or concerned that he or she may hurt, wound or do some kind of damage to another, it shows that the person has the capacity to care. And thus has a conscience that attempts to control their behavior whose impetus springs from compassion.