What does Cyrano mean by his quote, "I may not cut a stylish figure, but I hold my soul erect."

This is an excellent question and an excellent quote.
Cyrano de Bergerac is the story of a great man who is continually judged by
his appearance, the most notable feature of which is an extraordinarily protuberant nose. Those
who do not know him make fun of him; the shallow woman he loves (Roxane) would never consider him
as a lover because he is not beautiful (though she does have an epiphany once it is too late to
be acted upon). This is Cyrano's life, and who he is has been shaped by his
appearance.

This quote is Cyrano's statement about who he is. When
he says he does not "cut a stylish figure" he means he is not fashionably beautiful. When he says
he holds "his soul erect," he means what he IS is beautiful. He is a man of his word, a loyal
friend, a steadfast lover, a fearless soldier, an artist, an enemy of injustice, and in all ways
a man of integrity and good character.

Cyrano is well aware that he
lives in a society full of shallow people who will never recognize the beauty of his soul; this
quote is a reminder that external beauty is not what matters most.