TIME Caspar David Friedrich, A walk at dusk, 1830-35 Descendants of this theme: Autumn Clocks Cock-crow Eternity Evening and the setting sun Fleeting (flüchtig) Going to bed Larks May Metamorphosis Midday Midnight Morning and morning songs Night and the moon Rejuvenation Serenades and songs at evening Spring (season) Summer Time Waiting Waking up Winter