"never drink from wishing wells," warned the strange young magician. "and why not?" said magdalene. "for if you drink from wishing wells you shall be filled with the sadness of thousands of people's dearest dreams. 'tis a sad thing, a wishing well, filled with unfulfillment."
"Nature never appeals to intelligence until habit and instinct are useless. There is no intelligence where there is no change and no need of change." The Time Machine, H.G. Wells.