A man must ferry a wolf, a goat, and a head of cabbage across a river...

The man should ferry the goat across the river, then return alone.  He should then take either the cabbage or the wolf across the river, and ferry the goat back to the original side.  Leaving the goat, he should take the remaining wolf or cabbage across, then return empty to ferry the goat across:
            wolf, cabbage ------> goat
            wolf, cabbage ------ goat
            cabbage ------------> wolf, goat
            cabbage, goat ---------- wolf
            goat -------------> wolf, cabbage
            goat ------------ wolf, cabbage
            nothing -----------> wolf, cabbage, goat