Calvin and Hobbes by Bill Watterson for February 03, 1991
Calvin: Calvin suddenly realizes the world has no hue, value or chroma! Have the photoreceptors in Calvin's eyes stopped working properly, or has the fundamental nature of light changed?? Perhaps some strange nuclear or chemical reaction on the sun has caused electromagnetic radiation to defy separation into a spectrum? Maybe objects no longer reflect certain wavelengths! What ever the cause, it's clear to Calvin that there's no point in discussing things with his Daad! Dad: The problem is, you see everything in terms of black and white. Calvin: Sometimes that's the way things are!!