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" "If I hold my head to the left and look down at the handle grips and front wheel and map carrier and gas tank I get one pattern of sense data. If I move my head to the right I get another slightly different pattern of sense data. The two views are different. The angles of the planes and curves of the metal are different. The sunlight strikes them differently. If there's no logical basis for substance then there's no logical basis for concluding that what's produced these two views is the same motorcycle.
Robert Maynard Pirsig (6 September 1928 – 24 April 2017) was an American philosopher and novelist, most famous for his novel Zen and the Art of Motorcycle Maintenance in which he proposed what has become known as his Metaphysics of Quality (MoQ).
Biography information from Wikiquote
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The halo around the heads of Plato and Socrates is now gone. He sees that they consistently are doing exactly that which they accuse the Sophists of doing—using emotionally persuasive language for the ulterior purpose of making the weaker argument, the case for dialectic, appear the stronger. We always condemn most in others, he thought, that which we most fear in ourselves.
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