Peter Raymond Scholtes was a priest, consultant, and author.
In the 1960s, as a parish priest and choir leader, Scholtes wrote the hymn "They'll Know We Are Christians by Our Love".
By the 1980s, Scholtes had left the priesthood and become a business management consultant and author.
He co-authored The Team Handbook, which was named one of The 100 Best Business Books of All Time.
His best-known book is The Leader's Handbook, from 1998.