text: " An offence which admits of so little precision in the terms in which it is defined depending often upon the meaning to be attached to words the real import of which is varied by the tone or gesture of the speaker by the words which precede and by those which follow depending also upon the different ideas which men attach to the same words evidently rests on very different grounds from those cases where actual crimes have been perpetrated and deeds committed which leave numerous traces behind and which may be proved by the permanent results of which they have been the cause