A Christian leader writes: ‘The Italian violin maker Antonio Stradivari was a poor man. And yet his violins are now the most prized violins ever made because of the rich and resonant sound they produce. The unique sound of a Stradivarius cannot be duplicated. What may surprise you is that these...

Persistence and a refusal to abandon your vision kept you coming back and back and back again until you finally succeeded. Try to imagine what life would be like without the light bulb or the polio vaccine. Yet Thomas Edison and Jonas Salk lived through endless chapters of trial and failure...