“[T]hough religious thinkers will fight fiercely to show its standpoint to be the one religion really sanctions, each religion has signposts pointing in both ways. One the one hand towards a fundamentalist, authoritarian strain that insists if you want to be faithful you have to crucify your intellect; that is to believe just because your belief is absurd. And on the other hand, each of the three western religions has a rationalist tradition… far from viewing our capacity for reason as threatening our capacity to obey god, this tradition sees thinking as its very fulfillment. There are actually some wonderful Jewish parables, which show God laughing with pleasure as human beings defeat him with a particularly good argument. That is, god would rather be impressed than right on certain Jewish rationalist traditions. So if reason is God’s gift then he meant us to use it even against him if he is wrong or hasty. On this tradition our ability to make sense of the world whether with science or through the right moral actions, is just one more proof of gods goodness.”

The Transcendent Unity of Religions (1953; revised edition 1984)

The Unity of Religious Ideals, Part I : Seeking for the Ideal.
The Spiritual Message of Hazrat Inayat Khan

Source: Faith vs. Fact (2015), p. 220

Others

The Tragic Sense of Life (1913), VI : In the Depths of the Abyss

Whole Earth Review, May 1985, p. 49.

State of Fear (2004)

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.