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 not skilled in law would do in a difficult legal case he would consult an expert whom he could trust.

7. A limitation to the use of probabilism is mentioned by theologians. When one has decided on any course of conduct, he must loyally adhere to the consequences which the decision involves. He must not use a probable opinion to gain an advantage, and then in the same matter adopt the contrary opinion in order to shake off a burden. And so when a probable opinion has been adopted in favour of the validity of a will in my behalf, I cannot also adopt a contrary opinion that the will is invalid and refuse to pay the legacies.