When the world seems dark, I remind myself that Mister Rogers once got a letter from a blind girl, who wrote that she had heard him say he owned fish, but she worried they weren't being fed. So at the end of every following show, he'd narrate "I'm feeding the fish" just for her.
Self-made millionaire Harris Rosen adopted a Florida neighborhood called Tangelo Park, cut the crime rate in half, and increased the high school graudation rate from 25% to 100% by giving everyone free daycare and all high school