Bottom up thinkers try to start from experience and move from experience to understanding. They don't start with certain general principles they think beforehand are likely to be true they just hope to find out what reality is like.
I'm a very passionate believer in the unity of knowledge. There is one world of reality – one world of our experience that we're seeking to describe.
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When I'm home on a break I lock myself in my room and play guitar. After two or three hours I start getting into this total meditation. It's a feeling few people experience and that's usually when I come up with weird stuff. It just flows. I can't force myself. I don't sit down and say I've got to practice.
