(i'll just make it clear that indentation matters to users as a strongly recommended convention for ease of reading. to the interpreter, you can write everything on a single line)
I'll add that the related 'power' many Lisp acolytes talk about stems from the fact that everything is a list of lists. Due to this, you can write programs that take syntax (a list of lists) and modify that syntax to do something else (another list of lists).
Imagine a language that has a built in parser and code generation library.
