Even if you don't know Nietzsche you might have heard some of his brilliant quotes like below:
God Is Dead, and We Have Killed Him.
And Those Who Were Seen Dancing Were Thought to Be Insane.
To Live Is to Suffer, to Survive Is to Find Some Meaning in the Suffering.
That Which Does Not Kill Us Makes Us Stronger.
These quotes show his brilliance and the kind of life experiences he might had. But the biography is a different thing. It tells you less about the work but more about the person behind the work. It brings the human face behind those burning thoughts.
This one goes in detail about Nietzsche state of mind and living conditions while he was at a particular work. A man who had so many interests from God, philosophy, music and what not and up giving something that he was aware of before it became famous. He didn't keep his sight and senses to enjoy the reception of his work but once done it belonged to everyone else.
His work has been used in different context specially when her sister and others twisted his meaning to drive their own agenda but that is the beauty of a masterpiece. People can look at it, and interpret the way they deem fit. There is nothing wrong in having different ways to define these pieces until you twist them into a grotesque mask to hide behind.
Nietzsche was never there to explain his work otherwise he would have definitely opposed those grotesque masks but it doesn't diminish the sharpness in his works, and make them timeless which waits till the next one picks it up and found something in it.
Peace
