making a promise

i think that the way that nietzsche describes the ability to make and keep a promise is very interesting. i have never looked at anything this way before, first you have to think of the promise that you want to make, and then you have to make your self beleive that you are going to keep it, and then finally you have to carry out the action of actually keeping the promise. this si by far the most interesting thing i have read in this book thus far.