10 In Kerridge v Simmonds [1906] HCA 66; (1906) 4 CLR 253, it was held, following a review of the authorities, that it is not contrary to public policy to agree to stifle the prosecution of offences which relate purely to the infringement of private rights and do not relate to matters of public concern. There an agreement not to prosecute for oral slander was held to be valid and enforceable as no matter of public concern was involved. It was held that, if there is no social duty to report or prosecute a matter, an agreement to stifle prosecution is not void or unenforceable as being contrary to public policy. At 261 - 262 Barton J quoted, with approval and at length, from the judgment of Bowen LJ in Jones v Merionethshire Permanent Benefit Building Society (1892) 1 Ch 173 per Bowen LJ at 183, including the following passage: "The duty to prosecute, or not to prosecute, is a social and not a legal duty which depends on the circumstances of each case. It cannot be said that it is a moral duty to prosecute in all cases. The matter depends upon considerations which vary according to each case. But the person who has to act is bound morally to be influenced by no indirect motive. He is morally bound to bring a fair and honest mind to the consideration and to exercise his decision from a sense of duty to himself and others".