... sometime we don't like the same one. We change all the time, never constant. All we know is the past. And that is the same way of thinking, we put out past together and make ourselves. Therefor we don't if 'I' exist right at this moment. So, can we ever reach certainty? No, because we don't know the most important, the most basic question - Do we exist?. Therefor I say the answer is NO! Can we ever reach certainty? First, I would like to quote Descartes: "Cogito, ergo sum" - I think, therefor I am. He said this, because he didn't know weather he knew if he existed or not. Descartes thought like this: I know that I'm dreaming, but I don't know if it's reality or dream, I doubt. But because I doubt, I think, and if I am thinking, I am a human, thinking, being, and therefor - I exist - ...

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