In his painting "An Allegory of Prudence," 16th-century Venetian artist Titian portrayed Prudence as a man with three heads. One head was of a youth facing the future, another was of a mature man eyeing the present, and the third was of a wise old man gazing at the past. Over their heads Titian wrote a Latin phrase that means, "From the example of the past, the man of the present acts prudently so as not to imperil the future."