Perhaps the most absurd and injurious adage that has ever gained currency among mankind, is 'that it is no difference what a man believes, if only he be sincere.' Now, the truth is, that the more sincerely a man believes falsehood, the more destructive it is to all his interests, for time and eternity. This statement can be confirmed in every mind beyond the reach of doubt. First, _The influence of believing falsehood on temporal and social interests_. We will state some cases of common and constant occurrence, in order that the principle may be made obvious. A gentleman of property and the highest respectability, in the course of his business transactions, became acquainted with an individual, who, as the event showed, was a man destitute, in a great degree, of a conscientious regard for truth. The persuasions and false representations of this man led the gentleman referred to, to embark almost his entire fortune with him in speculations in which he was at that time engaged. While this matter was in progress, the friends of the gentleman called upon him, and stated their doubts of the individual's integrity who solicited his confidence, and likewise of the success of the enterprises in which he was asked to engage. The advice of his friends was rejected--he placed confidence in the false statements of the individual referred to--he acted upon those statements, and was, consequently, involved in pecuniary distress. In this case, the gentleman not only sincerely believed the falsehood to be the truth, but he had good motives in relation to the object which he desired to accomplish. He was a benevolent man. He had expended considerable sums for charitable and religious uses, and his desire was, by the increase of his property, to be enabled to accomplish greater good. In this case he was injured likewise by believing what others did not believe. The individual who seduced him into the speculation, had endeavoured to lead others to take the same views and to act in the same way; they did not believe the falsehood, and were, consequently, saved; he believed, and was, consequently, ruined.