Be always provided with Principles for the following Purposes: First, To engage in nothing but what Reason Dictates, what the Soveraign and Legislative Part of you shall suggest, for the Interest of Mankind. Secondly; To be disposed to quit your Opinion, and alter your Measures, when a Friend shall give you Good Grounds for so doing. But then the Reasons of changing your Mind ought to be drawn from the Considerations of Justice, Publick Good, or some such Generous Motive; And not because it pleases your Fancy, or promotes your Reputation.