... undressed and asleep in my bed?'1. And ultimately whether it is 'not God who is the source of truth but some evil mind'2 that deceives a human's thought and our own existence. He concludes that there is nothing in his knowledge or experience, which cannot be doubted. But even the malicious demon must exist for Descartes to be manipulated him, he takes this up in the second meditation: 'in that case I too undoubtly exist, if he is deceiving me'. Also in the second meditations he concludes it is only thought that cannot be 'torn away from me' by extreme doubt. Though through such thinking he concludes also the one thing he could be certain of was that his thoughts existed. And as doubting was a way of thinking, to doubt you were thinking would be wrong, a mistake, and thus was born his immortal idea of cogito ergo sum. Yet ...

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