Men can communicate ; so can the other animals. But men can communicate across the barriers of time and space, while the other animals cannot, for man alone holds the secret of the greatest of all inventions : the written word.Beside this, the telephone, the radio, the television are the toys of children . Only recently, in fact, have men conquered, by means of the spo ken word, any space larger than that over which the natural voice will carry, whereas down through the long course of history, writing has been of inestimable service in bringing men and nations closer together. We should know little enough, indeed, of that very history if we had to rely on oral tradition alone .

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