the highest grounds, and since the truths of mathematics are also based on the highest ground, self-evidence, and since there can be none higher than the highest, it follows that the moral principles of the Universe, so far as they can be known by man, have _precisely the same foundation of truthfulness as the principles of mathematics--they are_ SELF-EVIDENT. But some good Reader will check at the result now attained because it involves the position that the human Reason is the final standard of truth for man. Good reader, this position is involved, and is true; and for the sake of Christ's religion it must be taken. The only possible ground for a thoroughly satisfactory and thoroughly unanswerable Christian Philosophy, is the principle that _The human Reason is the final standard of truth for man_. It has been customary for the devout Bible-reader to esteem that book as his final standard; and to such an extent in many instances has his reverential regard for it been carried, that the expression will hardly be too strong for truth, that it has become an object of worship; and upon the mind of such a one the above assertion will produce a shock. While the author would treat with respect every religious feeling, he would still remind such a person that the Bible is the moral school-book of the spiritual person in man, which God himself prepared for man's use, and must in every case be inferior and subordinate to the being whom it was meant to educate; and furthermore, that, by the very fact of making man, God established in him the standard, and the right to require that this fact be recognized. Mark, God made the standard and thus established the right. This principle may be supported by the following considerations: 1. The church universally has acted upon it; and none have employed it more vigorously than those who have in terms most bitterly opposed it. One of the class just referred to affirms that the Bible is the standard of truth. "Admit," says a friend standing by, "that it would be if it were what it purports to be; but what evidence is there that this is the case." Thereupon the champion presents evidence from the fathers, and evidence from the book itself; and finally closes by saying, that such an array of evidence is ample to satisfy any _reasonable_ man of its truth and validity. His argument is undoubtedly satisfactory; but if he has not appealed to a reasonable man, _i. e._ to the Reason, _i. e._, if he has not acknowledged a standard for _the_ standard, and thus has not tacitly, unconsciously and yet decisively employed the Reason as the highest standard of truth, then his conduct has for us no adequate expression.