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" What was the nature of the universe into which she had been born? Why did it exist at all? If it had a purpose, what was it? These seemed to her the only questions worth exploring. And the only valid technique evolved by humans for exploring such questions was the scientific method, a robust and self-correcting search for the truth. Yet it had become obvious to her since about the age of twelve that science as it had progressed so far – physics, chemistry, biology, all the rest – had only inched towards grappling with the true questions, the fundamentals. Those questions had only been addressed by theologians and philosophers, it seemed to her. Unfortunately, their answers were a mush of doubt, self-delusion and flummery that had probably done more harm than good. And yet that was all there was. "
― Terry Pratchett , The Long War (The Long Earth, #2)