My Father Became a Doctor, and I, My Dad, Began a Career

Bogle: Frugality was a huge thing to me. My parents were students who were living off in grants and student loans, and we had no money. After my father became a doctor, so even as a doctore, lived a more comfortable life. But they were very frugal, and ther savings rate was very high. Bogle: When you get more income, your material aspirations either don't grow, or they grow slower than whatever that income jump is. That's the only way to build wealth over time.