I’ve been checking out the site Smart Kit a little more often recently. It seems to be a good source of puzzles. A recent puzzle that they posted is called “Letter Path.” The letter path of the title is a sequence of letters connected by lines. The object is to traverse the path in such a way as to spell out a famous quotation. No letter is repeated on the path, and you will have to visit a letter more than once to get the full quotation. Enjoy.