Yep. I've learned the hard way that the snappier, pithier, more 'quotable' the alleged quotation attributed to some notable, estimable person, the more skeptical I should probably be.

People find a great maxim or aphorism, but they don't seem to have enough faith in the truth of it to let it stand on its own merit, so they go looking for some cultural authority figure to attribute it to...

Now, I think there's value in the ethos that the misattributed quotation suggests, just as I think there's value in Jung's very different take on the process.

(I'm no expert on Jungian thought, but I think it's safe to say that Jung felt that much human behavior and character development is driven by mental processes beyond or beneath the arena of consciousness; in his view, I think it can be said, the person is formed by his own, mostly subconscious emotions, fears, and desires, more than a conscious, ego layer driven decision process.)