Sometimes my mistake has been hesitancy about acting on the decisions I've made. When's the best time to invest? It's today, not tomorrow.

I have probably purchased fifty 'hot tips' in my career, maybe even more. When I put them all together, I know I am a net loser.

As a young analyst just out of Stanford business school in the 1960s, I got to really understand what growth was about. Back then, you had to ask a customer to pay some money. That was the most important thing in getting a company off the ground.

I never knew the word 'billion' when I was a kid.

And each book has to receive your best effort every single time. No slacking.

Nobody told me I was a child prodigy.

I write by stealing time. The hours in the day have never felt as if they belonged to me. The greatest number has belonged to my day job as a physician and professor of medicine - eight to 12 hours, and even more in the early days.

What built America's called the American system, from Hamilton to Polk to Henry Clay to Lincoln to the Roosevelts. A system of protection of our manufacturing, financial system that lends to manufacturers, OK, and the control of our borders.