A conventional explanation of the short notice that many management ideas get is that they are only fashions. This article presents a complementary explanation. Based on Jung's personality types and my own experiences, I suggest that mostly only people with a certain type of personality become interested in ideas such as the learning organization. I further argue that all four of Jung's personality types must join in the sculpting of learning organizations if organizations are to succeed in becoming such organizations and continue being it, and, accordingly, if the idea is to survive in the long run.