“All religions are true but none are literal.”

E. Payne, trans., vol. 2, p. 230
The World as Will and Representation (1819; 1844; 1859)

On the Social State of Marxism (1978)

Indian Spirituality and Life (1919)
Context: To the Indian mind the least important part of religion is its dogma; the religious spirit matters, not the theological credo. On the contrary to the Western mind a fixed intellectual belief is the most important part of a cult; it is its core of meaning, it is the thing that distinguishes it from others. For it is its formulated beliefs that make it either a true or a false religion, according as it agrees or does not agree with the credo of its critic. This notion, however foolish and shallow, is a necessary consequence of the Western idea which falsely supposes that intellectual truth is the highest verity and, even, that there is no other. The Indian religious thinker knows that all the highest eternal verities are truths of the spirit. The supreme truths are neither the rigid conclusions of logical reasoning nor the affirmations of credal statement, but fruits of the soul's inner experience. Intellectual truth is only one of the doors to the outer precincts of the temple. And since intellectual truth turned towards the Infinite must be in its very nature many-sided and not narrowly one, the most varying intellectual beliefs can be equally true because they mirror different facets of the Infinite. However separated by intellectual distance, they still form so many side-entrances which admit the mind to some faint ray from a supreme Light. There are no true and false religions, but rather all religions are true in their own way and degree. Each is one of the thousand paths to the One Eternal.

St. 3
Miscellaneous Poems (1773), Divine Love, The Essential Characteristic of True Religion

Original: (la) Quid est aliud de philosophia tractare, nisi verae religionis, qua summa et principalis omnium rerum causa, Deus, et humiliter colitur, et rationabiliter investigatur, regulas exponere? Conficitur inde, veram esse philosophiam veram religionem, conversimque veram religionem esse veram philosophiam.

De Divina Praedestinatione, ch. 1; translation from Kenelm Henry Digby Mores Catholici, vol. 8 (London: Booker & Dolman, 1837) p. 198.

23 October 1929, From a letter to a Muslim disciple
India's Rebirth
Context: You say that you ask only for the Truth and yet you speak like a narrow and ignorant fanatic who refuses to believe in anything but the religion in which he was born. All fanaticism is false, because it is a contradiction of the very nature of God and of Truth. Truth cannot be shut up in a single book, Bible or Veda or Koran, or in a single religion. The Divine Being is eternal and universal and infinite and cannot be the sole property of the Mussulmans or of the Semitic religions only, — those that happened to be in a line from the Bible and to have Jewish or Arabian prophets for their founders. Hindus and Confucians and Taoists and all others have as much right to enter into relation with God and find the Truth in their own way. All religions have some truth in them, but none has the whole truth; all are created in time and finally decline and perish. Mahomed himself never pretended that the Koran was the last message of God and there would be no other. God and Truth outlast these religions and manifest themselves anew in whatever way or form the Divine Wisdom chooses. You cannot shut up God in the limitations of your own narrow brain or dictate to the Divine Power and Consciousness how or where or through whom it shall manifest; you cannot put up your puny barriers against the divine Omnipotence. These again are simple truths which are now being recognised all over the world; only the childish in mind or those who vegetate in some formula of the past deny them. You have insisted on my writing and asked for the Truth and I have answered. But if you want to be a Mussulman, no one prevents you. If the Truth I bring is too great for you to understand or to bear, you are free to go and live in a half-truth or in your own ignorance. I am not here to convert anyone; I do not preach to the world to come to me and I call no one. I am here to establish the divine life and the divine consciousness in those who of themselves feel the call to come to me and cleave to it and in no others.

¶ 8 - 9.
An Humble, Earnest and Affectionate Address to the Clergy (1761)
Context: God could not make the creature to be great and glorious in itself; this is as impossible, as for God to create beings into a state of independence on himself. "The heavens," saith David, "declare the glory of God"; and no creature, any more than the heavens, can declare any other glory but that of God. And as well might it be said, that the firmament shows forth its own handiwork, as that a holy divine or heavenly creature shows forth its own natural power.
But now, if all that is divine, great, glorious, and happy, in the spirits, tempers, operations, and enjoyments of the creature, is only so much of the greatness, glory, majesty, and blessedness of God, dwelling in it, and giving forth various births of his own triune life, light, and love, in and through the manifold forms and capacities of the creature to receive them, then we may infallibly see the true ground and nature of all true religion, and when and how we may be said to fulfill all our religious duty to God. For the creature's true religion, is its rendering to God all that is God's, it is its true continual acknowledging all that which it is, and has, and enjoys, in and from God. This is the one true religion of all intelligent creatures, whether in heaven, or on earth; for as they all have but one and the same relation to God, so though ever so different in their several births, states or offices, they all have but one and the same true religion, or right behavior towards God. Now the one relation, which is the ground of all true religion, and is one and the same between God and all intelligent creatures, is this, it is a total unalterable dependence upon God, an immediate continual receiving of every kind, and degree of goodness, blessing and happiness, that ever was, or can be found in them, from God alone. The highest angel has nothing of its own that it can offer unto God, no more light, love, purity, perfection, and glorious hallelujahs, that spring from itself, or its own powers, than the poorest creature upon earth. Could the angel see a spark of wisdom, goodness, or excellence, as coming from, or belonging to itself, its place in heaven would be lost, as sure as Lucifer lost his. But they are ever abiding flames of pure love, always ascending up to and uniting with God, for this reason, because the wisdom, the power, the glory, the majesty, the love, and goodness of God alone, is all that they see, and feel, and know, either within or without themselves. Songs of praise to their heavenly Father are their ravishing delight, because they see, and know, and feel, that it is the breath and Spirit of their heavenly Father that sings and rejoices in them. Their adoration in spirit and in truth never ceases, because they never cease to acknowledge the ALL of God; the ALL of God in the whole creation. This is the one religion of heaven, and nothing else is the truth of religion on earth.

Josh Billings: His Works, Complete (1873)

"On Works of Mercy and Compassion, Considered as The Proofs of True Religion", St. 6
Miscellaneous Poems (1773)
Context: Here, all ye learned, full of all Dispute,
Of true and false Religion lies the Root.
The Mind of Christ, when He became a Man,
With all Its Tempers, forms its real Plan,
The Sheep from Goats distinguishing full well; —
His Love is Heav'n, and Want of It is Hell.