"The milk of human kindness." The milk of human kindness? What the hell is that? To me it sounds like something Bill Clinton spilled on Monica Lewinsky's dress. So I asked myself, "Do I really even want to know what the milk of human kindness is?"
Curiosity eventually got the better of me and I googled it. According to The Phrase Finder, its origins are from Shakespeare's Macbeth and it means "care and compassion for others." Shakespeare's always been a little over my head (or rather a lot over my boredom threshold), so I'm not surprised I've never heard it.
But I wonder, why is this phrase still around some 384 years later? What's so special about it? Sounds like nincompoopery to me! But then I pondered... maybe Shakespeare was part of an early "Got Milk?" ad campaign. Dairy was big in the 1600's, and he was a celebrity at the time. He would have been the perfect spokesperson!
I think I'm on to something here...