 Later he had a deep friendship with the married French astronomer François Arago, whom he met daily for 15 years.Humboldt once wrote "I don't know sensual needs".However, a pious travelling companion, Francisco José de Caldas, accused him of frequenting houses in Quito where "impure love reigned", of making friends with "obscene dissolute youths", of giving vent to "shameful passions of his heart", and dropping him to travel with "Bonpland and his Adonis"[Monúfar].