Blood and Aphorisms--Nietzsche

From Nietzsche's Thus Spake Zarathustra (tr. R.J. Hollingdale):

Of all that is written I love only that which is written with blood. Write with blood: and you will discover that blood is spirit.
It is not easy to understand the blood of another: I hate the reading idler.
He who knows the reader does nothing further for the reader. Another century of readers--and spirit itself with stink.
That everyone is allowed to learn to read will in the long run ruin not only writing but thinking, too.
Once spirit was God, then it became man, and now it is even becoming mob.
He who writes in blood and aphorisms does not want to be read, he wants to be learned by heart.