18 Pa.C.S. § 105

The provisions of this title shall be construed according to the fair import of their terms but when the language is susceptible of differing constructions it shall be interpreted to further the general purposes stated in this title and the special purposes of the particular provision involved. The discretionary powers conferred by this title shall be exercised in accordance with the criteria stated in this title and, in so far as such criteria are not decisive, to further the general purposes stated in this title.