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Well, "Loren Ipsum" is essentially just filler text...

http://www.lipsum.com/

Edit: Yes, I just read that after finding the previous information.

The Latin used is actually just part of the translation you have posted: "But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the tr...