In nine lifetimes, you'll never know as much about your cat as your cat knows about you.
Michel de MontaigneOne man may have some special knowledge at first-hand about the character of a river or a spring, who otherwise knows only what everyone else knows. Yet to give currency to this shred of information, he will undertake to write on the whole science of physics. From this fault many great troubles spring.
Michel de Montaigne