Knowledge rests not upon truth alone, but upon error also. — Carl Jung

Knowledge rests not upon truth alone, but upon error also.

Author: Carl Jung

Insight: We tend to think of learning as a straight line toward truth—you gather facts, you understand reality better, and you're done. But Jung points to something messier and actually more useful: some of our most durable knowledge comes from getting things wrong first. Think about how you actually learn anything difficult. You misunderstand how to have a conversation, and that awkwardness teaches you something real about listening. You fail at a project and suddenly understand the constraints better than you would have from instructions alone. Your wrong guess about why someone upset you sometimes reveals more about your own patterns than the actual reason would have. The error isn't just a pit stop on the way to truth—it's doing real work. There's something almost rebellious about this idea in a time when we're supposed to have instant answers at our fingertips. It suggests that expertise isn't about memorizing correct information but about having made enough mistakes that you develop intuition. It means being genuinely curious about what you got wrong, rather than just rushing past it to the right answer. Your confusion and false starts aren't obstacles to knowledge—they're part of how knowledge actually builds itself.

Source: Two Essays on Analytical Psychology, p. 141 (1928; revised edition 1966)