Jack strongly exhibits the characteristics of a stoic hero. He is unfailingly polite and humble despite the completely alien nature of the futuristic world and never scoffs at or disparages the customs of the people he encounters (as unpleasant as they seem to him at times). Despite his almost hopeless situation, he does not bewail his destiny, instead exhibiting a strong amor fati. Jack consistently shows an uncommon moral strength of character by helping the poor and defenseless along the way, in one instance even helping talking dogs that worked for Aku, in another, releasing the souls of a family in a haunted mansion. Occasionally, he faces great physical pain, or has to forget his own goals in order to help someone in need.
Sword + Scabbard
Will to Power by Friedrich Nietzsche
The will to power describes what Nietzsche may have believed to be the main driving force in man: achievement, ambition, the striving to reach the highest possible position in life; these are all manifestations of the will to power.