Using "that" (or any other word) three consecutive times [closed]

Is it ever correct to use the word that (or any other word) three consecutive times? For example,

By reading Nietzsche I learned that that that does not kill me makes me stronger.

Solution 1:

Your example sentence is correct, but I would rewrite it to avoid difficulty in reading and parsing. For example,

By reading Nietzsche, I learned that what does not kill me makes me stronger.

Solution 2:

Plus one for Will's answer, well put. It is technically correct to use a single word many times, but can be extremely difficult to understand. The canonical example of this, I submit for your consideration, and amusement:

http://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo