The central doctrine of the teachings of Jesus of Nazareth, the leading impulse which he gave to the religious thought of his age, was that the thinking part of man survives his physical death, and that its condition does not depend on the rites of interment, as other religions then taught,[260-1] but on the character of its thoughts during life here. Filled with this new and sublime idea, he developed it in its numerous applications, and drew from it those startling inferences, which, to this day, stagger his followers, and have been in turn, the terror and derision of his foes. This he saw, that against a mind inwardly penetrated with the full conviction of a life hereafter, obtainable under known conditions, the powers of this world are utterly futile, and its pleasures hollow phantoms. The practical energy of this doctrine was immensely strengthened by another, which is found very obscurely, if at all, stated in his own words, but which was made the central point of their teaching by his immediate followers. The Christianity they preached was not a philosophical scheme for improving the race, but rested on the historical fact of a transaction between God and man, and while they conceded everlasting existence to all men, all would pass it in the utmost conceivable misery, except those who had learned of these historical events, and understood them as the church prescribed. As the ancient world placed truth in ideas and not in facts, no teaching could well have been more radically contrary to its modes of thought; and the doctrine once accepted, the spirit of proselytizing came with it. I have called this idea a new one to the first century of our era, and so it was in Europe and Syria. But in India, Sakyamuni, probably five hundred years before, had laid down in sententious maxims the philosophical principle which underlies the higher religious doctrine of a future life. These are his words, and if through the efforts of reasoning we ever reach a demonstration of the immortality of the soul, we shall do it by pursuing the argument here indicated: “Right thought is the path to life everlasting. Those who think do not die.”[262-1] Truth alone contains the elements of indefinite continuity; and truth is found only in the idea, in correct thought. Error in the intellectual processes corresponds to pain in sensation; it is the premonition of waning life, of threatened annihilation; it contains the seed of cessation of action or death. False reasoning is self-destructive. The man who believes himself invulnerable will scarcely survive his first combat. A man’s true ideas are the most he can hope, and all that he should wish, to carry with him to a life hereafter. Falsehood, sin, is the efficient agent of death. As Bishop Hall says: “There is a kind of not-being in sin; for sin is not an existence of somewhat that is, but a deficiency of that rectitude which should be; it is a privation, as blindness is a privation of sight.”