The Catholic Church And "Mental Reservation"

I was watching an old Gunsmoke TV episode the other day, and at a point in the program when a Catholic priest was caught in a lie, he explained himself to Matt Dillon by saying it was a “mental reservation.” What he meant by that is that his lie was justified because his lie was intended to do good.Here is how the Catholic Encyclopedia (X, 195) explains it: “… we are … under an obligation to keep secrets faithfully, and sometimes the easiest way of fulfilling that duty is to say what is false, or to tell a lie.”Of course God never authorizes telling a lie. To the contrary, many passages read similar to Rev 21:8 – “… the unbelieving … and murderers … and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone ….”How can you trust someone for the truth when they don’t think the truth is important, and admit they will tell lies if it furthers their goals and purposes?By its own admission, Catholicism cannot be trusted!