Failure and Grace

"He who has never failed somewhere, that man cannot be great.  Failure is the true test of greatness." 
                                                                                             -Thin Again page 35

And might I rework this quote?  This was the first thing that popped into my head. 

"He who has never failed somewhere, that man cannot experience grace.  Failure is the true test of grace." 

My greatness lies not in my ability nor in my works.  It lies in who He is, what  He's done, and where He is taking me  It's all about Him.