De regula Catoniana
(Concerning the Rule of Cato.)
1Celsus, Digest, Book XXXV. The Rule of Cato is stated as follows, “Any legacy that would be void if the testator died immediately after making his will will not be valid no matter how long afterwards he may die.” This rule does not hold good in certain cases. 1But what if anyone should make a bequest as follows: “Let such-and-such a sum be paid to Titius, if I should die after the Kalends.” Shall we quibble with reference to this? For, in this instance, if the testator should die immediately, it is better to hold that the legacy was not bequeathed at all, than that it was bequeathed illegally. 2Ad Dig. 34,7,1,2Windscheid: Lehrbuch des Pandektenrechts, 7. Aufl. 1891, Bd. III, § 654, Note 21.In like manner, if a tract of land left to you was yours at the time the will was executed, and you alienated it during the lifetime of the testator, you will be entitled to the bequest, but you will not be entitled to it if the testator died immediately after having made his will.
2Paulus, On Plautius, Book IV. If, however, a bequest should be made as follows, “If my daughter should marry Titius,” it is held to be valid if she should be married at the time of the death of the testator, even though at the time the will was made she was not marriageable.
3Papinianus, Questions, Book XV. The Rule of Cato is not applicable to either inheritances or legacies, the time of the vesting of which is not to be referred to the date of the death of the testator, but to that of the acceptance of the estate.
4Ad Dig. 34,7,4Windscheid: Lehrbuch des Pandektenrechts, 7. Aufl. 1891, Bd. III, § 638, Note 16.Ulpianus, On Sabinus, Book X. It is well established that the Rule of Cato is not applicable to the conditional appointments of heirs.
5The Same, On Sabinus, Book XXII. The Rule of Cato does not apply to new laws.