WIlliam Barclay was a Scottish author, radio and television presenter, Church of Scotland minister, and Professor of Divinity and Biblical Criticism at the University of Glasgow. He wrote a popular set of Bible commentaries on the New Testament that sold 1.5 million copies.
What a treasure! My husband discovered this modest book of prayers for mornings and evenings, along with a brief Scripture passage for each of forty days. The prayers are all so practical, relationship and work-oriented. They cut to the real stuff of living. Plus there are prayers for people in specific occupations (though unfortunately not some of the current ones like software engineer).