Can we buy peace of mind?

Wildwood - Can we buy peace of mind? To quote Robert Louis Stevenson "The rain is raining all around, it rains on field and tree, it rains on umbrellas everywhere and on the ships at sea". Can we buy peace of mind? I think we are misspelling the word peace and using "piece". Or are we so lost in pronunciation/translation? As for our man-made world, read the 14th Amendment of OUR Constitution.