The echo began in some indescribable way to undermine her hold on life. Coming at a moment when she chanced to be fatigued, it had managed to murmur, “Pathos, piety, courage—they exist, but are identical, and so is filth. Everything exists, nothing has value.” If one had spoken vileness in that place, or quoted lofty poetry, the [echo’s] comment would have been the same—“Ou-boum.”

This passage comes from E. M. Forster’s novel *A Passage to India* (1924), during the Marabar Caves episode. In the caves, an uncanny echo reduces every sound—speech, prayer, poetry, or profanity—to the same blank reverberation (“boum”), which several characters experience as spiritually and psychologically destabilizing. The line describes how the echo’s indifferent repetition strikes Mrs. Moore at a moment of fatigue, eroding her religious confidence and her sense that moral distinctions matter. The caves become a symbolic crisis-point in the novel, intensifying cultural misunderstanding and precipitating Mrs. Moore’s withdrawal from active engagement with the others.

Forster uses the Marabar echo as a metaphor for nihilism and the collapse of meaning. By making “pathos, piety, courage” indistinguishable from “filth,” the echo annihilates hierarchy and value: everything is flattened into the same acoustic residue. Mrs. Moore’s shock is not merely fear of the caves but a confrontation with a universe that seems indifferent to human ethics and spirituality. The echo’s “comment” suggests that language, culture, and even religion may be powerless against a deeper emptiness. In the novel’s larger design, this leveling force helps explain why sympathy and liberal goodwill—so central to Forster—can fail under the pressure of India’s vastness and ambiguity.