“I am certain that Jesus understood the difficulty inherent in the act of loving one's enemy. He never joined the ranks of those who talk glibly about the easiness of the moral life. He realized that every genuine expression of love grows out of a consistent and total surrender to God. So when Jesus said "love your enemy," he was not unmindful of its stringent qualities. Yet he meant every word of it. Our responsibility as Christians is to discover the meaning of this command and seek passionately to live it out in our daily lives.”

Source: Discipleship (1937), The Enemy, the "Extraordinary", p. 148.

Source: Home Truths (1859), Ch. II: "Do You Want a Friend?", p. 21

1950s, Loving Your Enemies (November 1957)

1950s, Loving Your Enemies (Christmas 1957)

Source: Christ and Culture (1951), pp. 70-71

1950s, Loving Your Enemies (November 1957)
Context: Now there is a final reason I think that Jesus says, "Love your enemies." It is this: that love has within it a redemptive power. And there is a power there that eventually transforms individuals. That’s why Jesus says, "Love your enemies." Because if you hate your enemies, you have no way to redeem and to transform your enemies. But if you love your enemies, you will discover that at the very root of love is the power of redemption. You just keep loving people and keep loving them, even though they’re mistreating you. Here’s the person who is a neighbor, and this person is doing something wrong to you and all of that. Just keep being friendly to that person. Keep loving them. Don’t do anything to embarrass them. Just keep loving them, and they can’t stand it too long. Oh, they react in many ways in the beginning. They react with bitterness because they’re mad because you love them like that. They react with guilt feelings, and sometimes they’ll hate you a little more at that transition period, but just keep loving them. And by the power of your love they will break down under the load. That’s love, you see. It is redemptive, and this is why Jesus says love. There’s something about love that builds up and is creative. There is something about hate that tears down and is destructive. So love your enemies.

1960s, The American Dream (1965)
Context: Oh yes, love is the way. Love is the only absolute. More and more I see this. I’ve seen too much hate to want to hate myself; hate is too great a burden to bear. I’ve seen it on the faces of too many sheriffs of the South — I’ve seen hate. In the faces and even the walk of too many Klansmen of the South, I’ve seen hate. Hate distorts the personality. Hate does something to the soul that causes one to lose his objectivity. The man who hates can’t think straight; the man who hates can’t reason right; the man who hates can’t see right; the man who hates can’t walk right. And I know now that Jesus is right, that love is the way. And this is why John said, "God is love," so that he who hates does not know God, but he who loves at that moment has the key that opens the door to the meaning of ultimate reality. So this morning there is so much that we have to offer to the world...
So yes, the dream has been shattered, and I have had my nightmarish experiences, but I tell you this morning once more that I haven’t lost the faith. I still have a dream that one day all of God’s children will have food and clothing and material well-being for their bodies, culture and education for their minds, and freedom for their spirits.
I still have a dream this morning: one day all of God’s black children will be respected like his white children.
I still have a dream this morning that one day the lion and the lamb will lie down together, and every man will sit under his own vine and fig tree and none shall be afraid...
I still have a dream this morning that truth will reign supreme and all of God’s children will respect the dignity and worth of human personality...
"We hold these truths to be self-evident that all men (All right) are created equal, that they are endowed by their Creator with certain inalienable Rights, that among these are Life, Liberty, and the pursuit of Happiness."
We open the doors of the church now. If someone needs to accept Christ, this is a marvelous opportunity, a great moment to make a decision. And as we sing together, we bid you come at this time by Christian experience, baptism, watch care. But come at this moment, become a part of this great Christian fellowship and accept Christ as your personal Savior.

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 104.

"The Response" prayer rally, 2011-08-06, quoted in * Kyle
Mantyla
The Response: Bickle Rails Against "Redefining Love" And False Religions
Right Wing Watch
2011-08-06
http://www.rightwingwatch.org/content/response-bickle-rails-against-redefining-love-and-false-religions
2011-08-06