This book has seven short biographies of what the author believes is their secret of greatness
These men are from varied times in history and various occupations. This book is published by Thomas Nelson is 194 pages.
The men are George Washington, William Wilberforce, Eric Liddell, Jackie Robinson, Pope John Paul II, and Charles Colson.
The author is a believer and writes from that perspective. Six of the men are born again, but from my standpoint I am not convinced about Pope Paul. I highly recommend it as a great study on the essential qualities of what is manliness in any age or circumstance.
I am also reading his much larger work Bonhoeffer [Pastor Martyr, Prophet, Spy] [575 pages.