When we speak of the invention of printing, we mean the invention of the art of multiplying books by means of single types capable of being used again and again in different combinations for the printing of different books. Taking the word printing in its widest sense, it means merely the impression of any image; and the art of impressing or stamping words or pictures seems to have been known from the very earliest times. The handles of Greek amphoræ, the bases of Roman lamps and vases, were often impressed with the maker’s name, or other legend, by means of a stamp. This was the basis of the art, and Cicero (_De Nat. Deorum_, ii. 37) had suggested the combination of single letters into sentences. Quintilian refers to stencil plates as a guide to writing; and stamps with letters cut in relief were in common use amongst the Romans. The need for the invention, however, was not great, and it was never made. The first practical printing, both from blocks and movable type, was done in China. As early as A.D. 593 the more important texts were printed from engraved wooden plates by the order of the Emperor Wên-ti, and in the eleventh century printing from movable type was introduced by a certain smith named Picheng. The multiplicity of Chinese characters rendered the discovery of movable type of little economical value, and the older system of block printing has found favour even up to the present time. In the same way, Corea and Japan, though both had experimented with movable type, returned to their former custom of block printing. It is impossible now to determine whether rumours of the art could have reached Europe from China and have acted as incentives to its practice. Writers on early printing scout the idea; and there is little to oppose to their verdict, with our present uncertain knowledge. Modern discoveries, however, point to the relations of China with foreign countries in the fourteenth century having been much more important than is generally supposed.