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Such
bequests are not common; reversionary benefits contingent upon the death
of the testator are indeed dangerous to announce in many cases: of this
we have a remarkable instance in the habits of a Roman prince, who used,
upon any notification made to him by rich persons that they had left him
a handsome estate in their wills, to express his entire satisfaction at
such arrangements and his gracious acceptance of those loyal legacies;
but then, if the testators neglected to give him immediate possession of
the property, if they           "persisted in living" (_si vivere
perseverarent_, as Suetonius expresses it), he was highly provoked, and
took his measures accordingly.