At last a fortunate accident came to my help. I observed in some stout Hebrew volumes, that they contained several alphabets, and that the number of their sheets was indicated not merely by Hebrew letters, but that for this purpose the characters of a second and a third alphabet had also been employed, these being commonly Latin and German letters. Now, I had not the slightest idea of printing. I generally imagined that books were printed like linen, and that each page was an impression from a separate form. I presumed however that the characters, which stood in similar places, must represent one and the same letter, and as I had already heard something of the order of the alphabet in these languages, I supposed that, for example, _a_, standing in the same place as _aleph_, must likewise be an aleph in sound. In this way I gradually learnt the Latin and German characters. By a kind of deciphering I began to combine various German letters into words; but as the characters used along with the Hebrew letters might be something quite different from these, I remained always doubtful whether the whole of my labour in this operation would not be in vain, till fortunately some leaves of an old German book fell into my hand. I began to read. How great were my joy and surprise, when I saw from the connection, that the words completely corresponded with those which I had learned. 'Tis true, in my Jewish language many of the words were unintelligible; but from the connection I was still able, with the omission of these words, to comprehend the whole pretty well.[26] This mode of learning by deciphering constitutes still my peculiar method of comprehending and judging the thoughts of others; and I maintain that no one can say he understands a book, as long as he finds himself compelled to deliver the thoughts of the author in the order and connection determined by him, and with the expressions which he has used. This is a mere work of memory, and no man can flatter himself with having comprehended an author till he is roused by his thoughts, which he apprehends at first but dimly, to reflect on the subject himself, and to work it out for himself, though it may be under the impulse of another. This distinction between different kinds of understanding must be evident to any man of discernment.--For the same reason also I can understand a book only when the thoughts which it contains harmonise after filling up the gaps between them.