Thats SO true... but the probelm is, the people actually believe in such things, and it makes this things actually be true for them... and then, they believe more and more, and the things become more and more true... thats why even today, in the 21th century, people still believe in such things...

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"Everything we do, everything we are, rests on our personal power. If we have enough of it, one word uttered to us might be sufficient to change the course of our lives. But if we don't have enough personal power, the most magnificent piece of wisdom can be revealed to us and that revelation won't make a damn bit of difference." Don Juan Matus - Tales of Power