Run, baby, run, don't ever look back...

I need to curse about something. Something related to the subject that has the honor to be named "society". Or civilization as some call it.
Honestly, wouldn't it be awesome to be that certain someone who changes the world? To whom people look up 100 years after darkness forever surrounded you? How would it be then, to have teachers preaching their students that what you once said hundreds of hundreds of years ago is the right way to go? That the words you wrote down to collect them and sell them as a book, is one of the values of the world's civilization? Would that be anything to aim for?
I don't think so. Everybody is supposed to know that everything is relative in life, so are the theories about life by so many important and famous people who were geeks and liars to the people they were sharing a time period with, but are only a dead body for the people in our time.
What I'm trying to say is, who ever decided that what people like Immanuel Kant said is right? I don't want to say that he is wrong, personally I agree with him. But why can't people decide on their own, what they choose to be values for them or what's right and what's wrong? In school, they're telling you that what people like Kant or Nietzsche once said is right. That it's what you should believe in, that it's nothing you can choose to accept or not. But what if, they're wrong? What if their words don't make any sense to you? Do you still have to believe in them?