Though the workmen were now growing more weary and disheartened with each new volume they undertook, Gutenberg would not give up. He persuaded them to start cutting the blocks for the Gospel of St. Matthew. But as he worked with his knives the apprentices grumbled about him. At last he had the first block nearly done. Then his hand slipped, the tool twisted, and the block was split across. The other men looked aghast. So much work had gone for nothing. Gutenberg sat studying the broken block of wood. As he studied it a new idea came to him. Picking up his knife he split the wood, making separate pieces of every letter carved on it. Then he stared at the pile of little pieces that lay before him like a bundle of splinters. He realized that he was now on the trail of a greater discovery than any he had yet made, for these separate letters could be used over and over again, not only in printing one book but in printing hundreds. Taking a fresh block he split it into little strips, and cutting these down to the right size, he carved a letter on the end of each strip. This was more difficult than cutting on the solid block, and he spoiled many strips of wood before he got a letter that satisfied him. But finally he had made one, and then another, and another, until he had all the letters of the alphabet. He was careful to cut the sticks of the proper width, so that the letters would not be too far apart when they should be used for printing. When they were done he showed them to the others and called them _stucke_, or type. They soon saw what a great step forward he had made. The first words he printed with type were _Bonus homo_, “a good man.” He took the letters that spelled the first word, and putting them in their proper order tied them together with a string. He only had one letter o, so he had to stop and cut two more. Then he made a supply of each letter of the alphabet, and put type of each letter separately in little boxes, to keep them from getting mixed. So he made the first font of movable type known to history. As he experimented with these first type he made another improvement. He found it was hard to keep the letters tight together, so that he could ink them and print from them. He cut little notches in the edges of the different type, and by fastening his linen thread about the notches in the outside letters of each word he found that he could hold a word as tightly together as if all the letters in it were cut on a single block.