Passages on nobility (and heredity, wealth, and greed):

Inf. 7: https://digitaldante.columbia.edu/dante/divine-comedy/inferno/inferno-7/

Purg. 7: https://digitaldante.columbia.edu/dante/divine-comedy/purgatorio/purgatorio-7/

Par. 8: https://digitaldante.columbia.edu/dante/divine-comedy/paradiso/paradiso-8/

Two passages on the heavens, including the citation of Dante’s canzone “Voi che ‘ntendendo il terzo ciel movete” in the heaven of Venus:

Par. 8: https://digitaldante.columbia.edu/dante/divine-comedy/paradiso/paradiso-8/

Par. 28.98-139: https://digitaldante.columbia.edu/dante/divine-comedy/paradiso/paradiso-28/