"I am convinced that an electronic machine, no matter how smart and intelligent, being still a mere spatial structure in concept, can neither innovate nor even understand the self-evident proposition: 'No spatial structure can be a representation of any feeling'. Such innovation can only be a work of a non-spatial mind, like a human being, and only such innovation, it should be acknowledged, can pave the way for further scientific achievements."

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I too did not want to take the path of a warrior. I believed that all that work was for nothing, and since we are all going to die what difference would it make to be a warrior? I was wrong. But I had to find that out for myself. Whenever you do realize that you are wrong, and that it certainly makes a world of difference, you can say that you are convinced. And then you can proceed by yourself. Any by yourself you may even become a man of knowledge

— Carlos Castaneda