The truth to which such considerations conduct is, that no hard and fast line can be drawn between the miraculous and the non-miraculous. To the untutored mind, like that of the savage who thought it miraculous that a chip with a message written on it had talked to the recipient, the simplest thing that he cannot explain is miraculous: "_omne ignotum pro mirifico_," said Tacitus. As the range of knowledge and power widens, the range of the miraculous narrows correspondingly. Some twenty years since, the International Sunday-school Lessons employed as a proof of the divinity of Christ the reputedly miraculous knowledge which he evinced in his first interview with Nathanael of a solitary hour in Nathanael's experience.[30] Since then it has been demonstrated[31] by psychical research that the natural order of the world includes telepathy, and the range of the miraculous has been correspondingly reduced without detriment to the argument for the divinity of Christ, now rested on less precarious ground. Under such conditions as we have reviewed a miracle cannot always be one and the same thing. Miracle must therefore be defined as being what our whole course of thought has suggested that it is: in general, an elastic word; in particular, a provisional word,--a word whose application narrows with the enlarging range of human knowledge[32] and power which for the time it transcends; a word whose history, in its record of ranges already transcended, prompts expectation that ranges still beyond may be transcended in the illimitable progress of mankind. Professor Le Conte says that miracle is "an occurrence or a phenomenon according to a law higher than any yet known." Thus it is a case of human ignorance, not of divine interference.