This is Master Yoda's legendary quote from Star Wars:The Empire strikes back. (like you don't love Star Wars)
Personally, I always think one should not aim for perfection nor being the 'best' in the field when one determines and considers getting involved in that particular..um..subject.
Apparently, Yoda thinks doing one's best just isn't enough-but one should be determined to accomplish something entirely when he/she decides to 'Do" it.
Begin the discussion, we will. (smooth)

