There are these two young fish swimming along and they happen to meet an older fish swimming the other way, who nods at them and says 'Morning, boys. How's the water?' And the two young fish swim on for a bit, and then eventually one of them looks over at the other and goes 'What the hell is water?'
One cannot read the New Testament without acquired admiration for whatever it abuses not to speak of the "wisdom of this world," which an impudent wind bag tries to dispose of "by the foolishness of preaching. "