HYDERABAD, India — Blinded in one eye by the so-called “beggar mafia” so she'd be a better earner, 6-year-old Reena was used to wearing sunglasses. But when American Paul Wilkes and his wife, Tracy, came to visit Reena in the Home of Hope orphanage in Kerala, India, she took off her shades and smiled up at them beatifically. Wilkes, a contemplative Catholic and author of several books on religious faith, knew then and there that it was time to stop writing about faith and start doing something about it.