So far in the play Cyrano de Bergerac, Cyrano is a poet, soldier, and fencer. He is overconfident because he is self-conscious about his giant nose. Whenever someone makes fun of his nose, Cyrano challenges them to fence him. At one point in the story, Cyrano is fencing the Viscount and making up a poem at the same time.  This shows that Cyrano is confidant in both his fencing abilities and him ability to make up wonderful poems on the spot.
A metaphor is a way of comparing two objects without using ‘like’ or ‘as’.
A simile is a way of comparing two objects with using ‘like’ or ‘as’.