Paul Tournier was a famous Swiss physician and a dedicated Christian author of many insightful books. After he had written his first book, he returned to his medical school to visit his favorite old professor. Granted an afternoon of the venerable man's time, Tournier read a large portion of his new book to his teacher.

As he completed his reading, he looked up to find tears in the old man's eyes.

"Oh, Paul," said the professor, "That's a wonderful book. Everyone of us Christians should read it."

Tournier was surprised. "I didn't know you were a Christian, professor. When did you become one?"

His old teacher's answer surprised him. His answer: "Just now, as you read your book."