The accused, wherever
possible, must assume a temperate tone in his defence, for the reason that as a rule anger and excitement are near akin to madness. All these cases
have this much in common, that the accused does not
always defend his act, but often pleads excuse and
asks for pardon. For these are domestic quarrels, in
which the fact that the offence is an isolated case,
due to error and of a less serious character than
alleged, will sometimes suffice to secure an acquittal.