Duality; a simple, yet very complex man with a complex legacy. Reminds me of a quote, I can't quite remember the source and I'm paraphrasing just a bit -
 " Though he possessed traits that would seemingly invoke words of hellfire and damnation,  so to did he possess qualities that were a cause for men to be celebrated throughout the ages".
 That, to me anyway, was Bobby Knight in a nutshell.  An old school hardass with a temper that would get the best of him, but also carried  a heart of gold if you got to experience it.