28 But it is accepted, particularly where the offence involves a sexual assault upon a young child within a family, that a paramount consideration will be the punishment of the offender and the imposition of a sentence having appropriate qualities of general and particular deterrence in the attempt to mark the seriousness with which the commission of the offence is viewed by the court and in an endeavour to secure a degree of protection for children from this and like minded offenders. Such matters were discussed at length in Woods where it was made clear that personal circumstances, as I think existed here, such as relatively good antecedents, contrition, an apparently serious attempt to achieve the offender's rehabilitation and the like, have diminished mitigatory power. Nonetheless, for an offence of this kind, as for every offence, the proper discharge of the sentencing discretion will be the achievement of a sentence which is duly proportionate to the criminality of the conduct involved, having regard not only to the circumstances of the commission of the offence, but also to the circumstances applicable to the offender.