Who said "They feel pain when you kill them."?

This quote is attributed to John Isidore.

They feel pain when you kill them. - John Isidore

"They feel pain when you kill them."

John Isidore Kindness

Character in Do Androids Dream of Electric Sheep?

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"The real things are gone."

"Dead world dead things."

"The book tells the truth about souls."

"The kipchak teaches acceptance of fate."

"A good man treats his wife with respect."

"Kindness always comes back around."

"The power of a smile can change everything."

"Kindness is weakness to some. Not to me."