Since the dawn of history various extraordinary phenomena have been recorded as happening amongst human beings. Witnesses are not wanting in modern times to attest to such events even in societies living under the full blaze of modern science. The vast mass of such evidence is unreliable, coming as it does from ignorant, superstitious, or fraudulent persons. In many instances the so-called miracles are imitations. But what do they imitate? It is not the sign of a candid or scientific mind to throw overboard anything without proper investigation. Surface scientists, unable to explain the various extraordinary mental phenomena, strive to ignore their very existence. They are therefore more culpable than those who think that their prayers are answered by a being or beings above the clouds, or than those who believe that their petitions will make such beings change the course of the universe. The latter have the excuse of ignorance, or at least of a defective system of education, which has taught them dependence upon such beings, a dependence which has become a part of their degenerate nature. The former have no such excuse.
— Swami Vivekananda, Preface to Raja-Yoga