Dante Alighiere, PURGATORIO, Canto II

Illustration by Salvador Dali
.................................................
They behold a vessel under conduct of an angel, coming over the waves with spirits to purgatory, among whom, when the passengers have landed, Dante recognises his friend Casella; but, while they are entertained by him with a song, they hear Cato exclaiming against their negligent loitering, and at that rebuke hasten forwards to the mountain.