in Thoreau’s Journal:

It is a test question affecting the youth of a person, —Have you knowledge of the morning? Do you sympathize with that season of nature? Are you abroad early, brushing the dews aside? If the sunrises on you slumbering, if you do not hear the morning cock-crow, if you do not witness the blushes of Aurora, if you are not acquainted with Venus as the morning star, what relation have you to wisdom and purity? You have then forgotten your Creator in the days of your youth! Your shutters were darkened till noon!