I say “ignorance for which the agent is not responsible,” for the ignorance itself is punished by the law, if the agent appear to be responsible for his ignorance, e.g. for an offence committed in a fit of drunkenness the penalty is doubled: for the origin of the offence lies in the man himself; he might have avoided the intoxication, which was the cause of his ignorance. Again, ignorance of any of the ordinances of the law, which a man ought to know and easily can know, does not avert punishment. And so in other cases, where ignorance seems to be the result of negligence, the offender is punished, since it lay with him to remove this ignorance; for he might have taken the requisite trouble.