“With five feeble senses we pretend to comprehend the boundlessly complex cosmos, yet other beings with wider, stronger, or different range of senses might not only see very differently the things we see, but might see and study whole worlds of matter, energy, and life which lie close at hand yet can never be detected with the senses we have.”

“What do we know,” he had said, “of the world and the universe about us? Our means of receiving impressions are absurdly few, and our notions of surrounding objects infinitely narrow. We see things only as we are constructed to see them, and can gain no idea of their absolute nature. With five feeble senses we pretend to comprehend the boundlessly complex cosmos, yet other beings with a wider, stronger, or different range of senses might not only see very differently the things we see, but might see and study whole worlds of matter, energy, and life which lie close at hand yet can never be detected with the senses we have. I have always believed that such strange, inaccessible worlds exist at our very elbows, and now I believe I have found a way to break down the barriers.”

“Would to Heaven we had never approached them at all, but had run back at top speed out of that blasphemous tunnel with the greasily smooth floors and the degenerate murals aping and mocking the things they had superseded-run back, before we had seen what we did see, and before our minds were burned with something which will never let us breathe easily again!”

“We might have known from the first that human curiosity is undying, and that the results we announced would be enough to spear others ahead on the same age-long pursuit of the unknown.”

“All life is only a set of pictures in the brain, among which there is no difference betwixt those born of real things and those born of inward dreamings, and no cause to value the one above the other.”

“Wonder had gone away, and he had forgotten that life is only a set of pictures in the brain, among which there is no difference betwixt those born of real things and those born of inward dreamings, and no cause to value the one above the other.”

“He talked about terrible meetings in lonely places, of cyclopean ruins in the heart of the Maine woods beneath which vast staircases led down to abysses of nighted secrets, of complex angles that led through invisible walls to other regions of space and time, and of hideous exchanges of personality that permitted explorations in remote and forbidden places, on other worlds, and in different space-time continua.”