"The rules that I shall propose concerning secrecy, and from which I think it not safe to deviate without long and exact deliberation, are, never to solicit the knowledge of a secret,--not willingly, nor without many limitations, to accept such confidence when it is offered; when a secret is once admitted, to consider the trust as of a very high nature, important as society and sacred as truth, and therefore not to be violated for any incidental convenience, or slight appearance of contrary fitness."