Great Expectations by Charles Dickens Chapter 7 Page 6

But, at last I began, in a purblind groping way, to read, write, and cipher, on the very smallest scale.

One night I was sitting in the chimney corner with my slate, expending great efforts on the production of a letter to Joe. I think it must have been a full year after our hunt upon the marshes, for it was a long time after, and it was winter and a hard frost. With an alphabet on the hearth at my feet for reference, I contrived in an hour or two to print and smear this epistle: —

pip

There was no indispensable necessity for my communicating with Joe by letter, inasmuch as he sat beside me and we were alone. But I delivered this written communication (slate and all) with my own hand, and Joe received it as a miracle of erudition.