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The question of whether miracles ever occur is a question of common sense and of ordinary historical imagination: not of any final physical experiment. One may here surely dismiss that quite brainless piece of pedantry which talks about the need for "scientific conditions" in connection with alleged spiritual phenomena. If we are asking whether a dead soul can communicate with a living it is ludicrous to insist that it shall be under conditions in which no two living souls in their senses would seriously communicate with each other. The fact that ghosts prefer darkness no more disproves the existence of ghosts than the fact that lovers prefer darkness disproves the existence of love. If you choose to say, "I will believe that Miss Brown called her _fiancé_ a periwinkle or any other endearing term, if she will repeat the word before seventeen psychologists," then I shall reply, "Very well, if those are your conditions, you will never get the truth, for she certainly will not say it." It is just as unscientific as it is unphilosophical to be surprised that in an unsympathetic atmosphere certain extraordinary sympathies do not arise. It is as if I said that I could not tell if there was a fog because the air was not clear enough; or as if I insisted on perfect sunlight in order to see a solar eclipse.