Now we must certainly admit that the position of affairs is far less favourable in regard to the mode of expression in dreams than it is with these ancient tongues and scripts; for these latter were originally designed as a means of communication; that is, they were intended to be understood, no matter what ways or means they had to employ. But just this character is lacking to dreams: their object is not to tell anyone anything; they are not a means of communication; on the contrary, it is important to them not to be understood. So we ought not to be surprised or misled if the result is that a number of the ambiguities and uncertainties in dreams cannot be determined. The only certain piece of knowledge gained from our comparison is that this indefiniteness (which people would like to make use of as an argument against the accuracy of our dream-interpretations) is rather to be recognized as a regular characteristic of all primitive systems of expression. Practice and experience alone can determine the extent to which dreams can in actual fact be understood. My own opinion is that this is possible to a very great extent; and a comparison of the results obtained by properly-trained analysts confirms my view. It is well known that the lay public, even in scientific circles, delights to make a parade of superior scepticism in the face of the difficulties and uncertainties which beset a scientific achievement; I think they are wrong in so doing. You may possibly not at all know that the same thing happened at the time when the Babylonian and Assyrian inscriptions were being deciphered. There was a point at which public opinion was active in declaring that the men deciphering the cuneiform writing were victims of a chimera and that the whole business of investigation was a fraud. But in the year 1857 the Royal Asiatic Society made a conclusive test. They challenged four of the most distinguished men engaged in this branch of research—Rawlinson, Hincks, Fox Talbot and Oppert—to send to the Society in sealed envelopes independent translations of a newly-discovered inscription, and, after comparing the four versions, they were able to announce that there was sufficient agreement between the four to justify belief in what had been achieved and confidence in further progress. The mockery of the learned laity then gradually came to an end, and certainty in the reading of cuneiform documents has advanced enormously since then.