Lisp's big strength is that since the program itself is represented in the same form as the data structures, you can very easily generate executable programs by

Lisp's big strength is that since the program itself is represented in the same form as the data structures, you can very easily generate executable programs by just slapping lists together. I'd recommend going back to the Scheme version-- I initially didn't understand the cool factor of Lisp either, until I used it for a while (and found macros).