I don't really have any saying that I use that are really "Original".
But that's mainly caused by the fact that everything has been said or done before. Knowing that earth has been here for such a long time and so has the human race allows us to know that everything that ever happens has most likely happened before.
You may think you have it good, or maybe bad, but someone has had it better or worse then you atleast once. Nothing can ever be the best, as it would have something better then it eventually, maybe you would say it is the best, because there is nothing better then it yet, well that could be the case, but eventually there will be some way to travel back in time, thus meaning that the time would be joined together from end of current to start of all.
My hypothesis then would be that, the timeline of the universe would look something like this:
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Current Future
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Someone brings the future back to the past, causing it to loop, but then the future is still continuing meaning that the newest things are infact old, thus creating the fact that there is something better even though it is counted as the past and is not passed down via knowledge you will never know it but the fact remains that there is always something better.
This is hard to show but it is obvious, and by now you should all understand this. This fact will always remain, and it cannot and I mean CANNOT be disproven, as you try to disprove it, someone has already tried harder then you, and someone has already tried harder then me to prove this fact, It is impossible to disprove that which cannot be disproven.
Thus meaning that this is actually all invalid as it has been "Plagiarized", obviously not intentionally, as for me I am writing something unique, but to the people that wrote it in the future, or the past, it is infact there work. BUT it really isn't, because someone did it before them. And even the first person to ever right it, did not write it first.