| Name | Date | Nationality | Profession | Quotes |
|---|---|---|---|---|
Henry van Dyke
|
1852-1933 | American | 0 | |
Paulo Freire
|
1921 – 1997 | Brazilian | 29 | |
Peter Drucker
|
1909 - 2005 | Austrian | 27 | |
Stephen Covey
|
1932-2012 | American | 44 |