Robert Greene tells of a people warned about an impeding drought and advised to build reservoirs to store water but only one person headed the advice.
Waterfalls, rivers, streams and other sources of water dried up, except for the one with a hidden reservoir. Suddenly, water started flowing again everywhere relieving everyone but alas!, after drinking the new water, they began acting and behaving strangely, lost all memory of their previous lives including the warnings about the water except the one who continued to drink from his clean water reservoir.