Which Phrase Best Illustrates the Idea That Achieving Excellence Requires

Which phrase best illustrates the idea that achieving excellence requires an enormous investment on the part of each individual, and not merely the creation of a supportive environment by those "at the top?"

A) "The cautious seldom err." (Confucius)
B) "Every job is a self-portrait of the person who did it." (Anonymous)
C) "Nothing endures but change." (Heraclitus)
D) "Don't judge a man until you have walked a mile in his shoes." (Native American proverb)