The Sinner's Guide (Unabridged‪)‬

The Venerable Louis of Granada, OP (1504-1588), was a Dominican friar who was a noted theologian, writer and preacher. He is best known for his ascetical writings of which The Sinner's Guide has achieved the greatest success. It was published in 1555 and quickly became a classic being translated into Italian, Latin, French, German, Polish, and Greek. All the money he earned from the work went to the poor. The book has been compared with Thomas à Kempis's The Imitation of Christ.

St. Teresa of Avila said this book converted over one million people in her day. St. John of the Cross, St. Francis de Sales, St. Charles Borromeo, St. Vincent de Paul, and St. Rose of Lima, all claimed it as a favorite.