“We don't know who discovered water, but we know it wasn't the fish.”
“We don't know who discovered water, but we are certain it wasn't a fish.”
“It wasn't until late in life that I discovered how easy it is to say "I don't know.”
“Now you people have names. That's because you don't know who you are. We know who we are, so we don't need names.”
“But fishing, as we know, in libraries or anywhere else, is a tricky business, with never a certainty of who's going to catch whom.”
“We're guys. Half the time, we don't know who we are. It helps things become a lot easier if we know who you are.”