The Text and the Last Words of Martin Luther and being humble

I was doing some reading on how to best interpret Scripture and came across this quote from Martin Luther.  It was found on his desk shortly after his death,

"No one can understand the Bucolica of Vergil, unless he has been a shepherd for five years.  No one can understand Vergil's Georgica unless he's been working the land for five years.  No one is able to really understand Cicero in his epistles, unless he's been active in politics of a great state for 25 years.  And nobody should think he has sufficiently grasped the Holy Scriptures, unless he has governed the churches for a hundred years with prophets like Elijah and Elisha, with John the Baptist, with Christ and the apostles.  We are beggars. This is true."