Authors:

... the laws of physics and of logic ... the number system ... the principle of algebraic substitution. These are ghosts. We just believe in them so thoroughly they seem real.

Robert M. Pirsig (2009). “Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values”, p.41, Harper Collins
... the laws of physics and of logic ... the number system ... the principle of algebraic substitution. These are ghosts. We just believe in them so thoroughly they seem real.