It is however the rarest thing in the world, for any one to found his opinion, simply upon the evidence that presents itself to him of the truth of the proposition which comes before him to be examined. Where is the man that breaks loose from all the shackles that in his youth had been imposed upon hills, and says to Truth, "Go on; whithersoever thou leadest, I am prepared to follow?" To weigh the evidence for and against a proposition, in scales so balanced, that the "division of the twentieth part of one poor scruple, the estimation of a hair," shall be recognised and submitted to, is the privilege of a mind of no ordinary fairness and firmness. The Scriptures say "The heart of man is deceitful above all things." The thinking principle within us is so subtle, has passed through so many forms of instruction, and is under the influence and direction of such a variety of causes, that no man can accurately pronounce by what impulse he has been led to the conclusion in which he finally reposes. Every ingenuous person, who is invited to embrace a certain profession, that of the church for example, will desire, preparatorily to his final determination, to examine the evidences and the merits of the religion he embraces, that he may enter upon his profession under the influence of a sincere conviction, and be inspired with that zeal, in singleness of heart, which can alone prevent his vocation from being disgraceful to him. Yet how many motives are there, constraining him to abide in an affirmative conclusion? His friends expect this from him. Perhaps his own inclination leads him to select this destination rather than any other. Perhaps preferment and opulence wait upon his decision. If the final result of his enquiries lead him to an opposite judgment, to how much obloquy will he be exposed! Where is the man who can say that no unconscious bias has influenced him in the progress of his investigation? Who shall pronounce that, under very different circumstances, his conclusions would not have been essentially other than they are? But the enquiry of an active and a searching mind does not terminate on a certain day. He will be for ever revising and reconsidering his first determinations. It is one of the leading maxims of an honourable mind, that we must be, at all times, and to the last hour of our existence, accessible to conviction built upon new evidence, or upon evidence presented in a light in which it had not before been viewed. If then the probationer for the clerical profession was under some bias in his first investigation, how must it be expected to be with him, when he has already taken the vow, and received ordination? Can he with a calm and unaltered spirit contemplate the possibility, that the ground shall be cut away from under him, and that, by dint of irrefragable argument, he shall be stripped of his occupation, and turned out naked and friendless into the world?