Ecce Homo Complete Works, Volume Seventeen · Friedrich Wilhelm Nietzsche
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If you should require a formula for a destiny of this kind that has taken human form, you will find it in my _Zarathustra_. "And he who would be a creator in good and evil--verily, he must first be a destroyer, and break values into pieces. "Thus the greatest evil belongeth unto the greatest good: but this is the creative good." I am by far the most terrible man that has ever existed; but this does not alter the fact that I shall become the most beneficent. I know the joy of _annihilation_ to a degree which is commensurate with my power to annihilate. In both cases I obey my Dionysian nature, which knows not how to separate the negative deed from the saying of yea. I am the first immoralist, and in this sense I am essentially the annihilator.
Text from Project Gutenberg, public domain in the United States.