milk of human kindness, the

the milk of human kindness

An innate sense of compassion. The phrase comes from Shakespeare's Macbeth. Lisa would never say anything that cruel—she has the milk of human kindness in her.
See also: human, kindness, milk, of

milk of human kindness, the

Compassion, sympathy, as in There's no milk of human kindness in that girl-she's totally selfish. This expression was invented by Shakespeare in Macbeth (1:5), where Lady Macbeth complains that her husband "is too full of the milk of human kindness" to kill his rivals.
See also: human, milk, of