force to cross over the boundaries of selfishness and sensuality, and to become a hero. XLV. In all these phenomena, a principle directly adverse to that of physical nature manifests itself. While in the latter, self-love is a necessary supreme law, in the spiritual life of man we see prevailing, as a foundation to morality, a voluntary sacrifice of self, offered on the altar of love. No pain or regret ever accompanies such an offering; on the contrary, a sensible man undertakes it with cheerfulness, as a manifestation of his exalted nature, and derives from its performance a purer joy than all other earthly enjoyments could afford him. But this love, which limits and conquers self-love, this love which so well testifies to the excellence of man, whence does it proceed? Assuredly not from physical nature; this is, on the contrary, based upon a law which would destroy love. It must emanate, then, from a source, itself a prototype of moral perfection, a perpetual spring of the purest love; and this source is God. Through the effects and impressions of this celestial love, man feels the need of approaching his Creator, of finding in Him the provident Ruler of the human destinies, and of expecting from His kindness the future triumph of good, and an ultimate perfection of all things. God, providence, and the immortality of the soul, become then for him incontestable truths: and at such a knowledge he does not arrive by way of laborious instruction and logical demonstrations; but it springs up, as it were, in his inward feeling, which prompts him to regulate his life according to that sublime model of moral perfection; therefore, although reason furnishes not to him logical proofs of these truths, yet he finds the presentiment of them within his heart, he feels them, he accepts them with a force more sentimental than intellectual, he embraces them with enthusiasm, and can no longer detach himself from them; in short he _believes_ them.