We visited the house of Hugh Miller, the Scottish 19th Century geologist and social activist. The lovely modern garden had the above quotation from him carved in stone. I've been reading Neil Gaiman's novel American Gods. On page 152, the lead character says: " All we have to believe with is our senses:the tools we use to perceive the world, our sight, our touch, our memory. If they lie to us, then nothing can be trusted." Hugh Miller is now lauded as an acute observer rather more than as a theorist. Senses were everything.