Number is different from quantity. This difference is basic for any sort of theorizing in behavioral science, any sort of imagining of what goes on between organisms or inside organisms as part of their processes of thought.
Gregory BatesonWhat is the pattern that connects the crab to the lobster and the primrose to the orchid, and all of them to me, and me to you?
Gregory BatesonIn the nature of the case, an explorer can never know what he is exploring until it has been explored.
Gregory BatesonNumbers are the product of counting. Quantities are the product of measurement. This means that numbers can conceivably be accurate because there is a discontinuity between each integer and the next. Between two and three there is a jump. In the case of quantity, there is no such jump; and because jump is missing in the world of quantity, it is impossible for any quantity to be exact. You can have exactly three tomatoes. You can never have exactly three gallons of water. Always quantity is approximate.
Gregory Bateson