Benjamin Eugene Griessman, Ph.D., was an internationally known speaker, professor, executive coach, thought leader on high achievement, Lincoln scholar, playwright, actor and television host.<ref>[https://www.librarything.com/profile/griessman | Benjamin Eugene Griessman, Ph.D., was an internationally known speaker, professor, executive coach, thought leader on high achievement, Lincoln scholar, playwright, actor and television host.<ref>[https://www.librarything.com/profile/griessman |