The Will to Power · Friedrich Wilhelm Nietzsche
625.
The mechanical concept of "movement" is already a translation of the original process into the _language of symbols of the eye and the touch._ The concept _atom,_ the distinction between the "seat of a motive force and the force itself," is a _language of symbols derived from our logical and physical world._ It does not lie within our power to alter our means of expression: it is possible to understand to what extend they are but symptomatic. To demand an _adequate means of expression is nonsense_: it lies at the heart of a language, of a medium of communication, to express _relation_ only.... The concept "truth" is _opposed to good sense._ The whole province of truth--_falseness_ only applies to the relations between beings, not to an "absolute." There is no such thing as a "being in itself" (_relations_ in the first place constitute being), any more than there can be "knowledge in itself."
Text from Project Gutenberg, public domain in the United States.