What is one of the best or most worthwhile investments you have ever made — of money, time, or energy?

We've just passed a milestone: Twenty years ago, on January 3, 1972, Blue Chip Stamps (then an affiliate of Berkshire and later merged into it) bought control of See's Candy Shops, a West Coast manufacturer and retailer of boxed-chocolates. The nominal price that the sellers were asking - calculated on the 100% ownership we ultimately attained - was $40 million. But the company had $10 million of excess cash, and therefore the true offering price was $30 million. Charlie and I, not yet fully appreciative of the value of an economic franchise, looked at the company's mere $7 million of tangible net worth and said $25 million was as high as we would go (and we meant it). Fortunately, the sellers accepted our offer. The sales of trading stamps by Blue Chip thereafter declined from $102.5 million in 1972 to $1.2 million in 1991. But See's candy sales in the same period increased from $29 million to $196 million. Moreover, profits at See's grew even faster than sales, from $4.2 million pre-tax in 1972 to $42.4 million last year.

They win the respect, the deserved trust, of the people they deal with, and there is huge pleasure in life to be obtained from getting deserved trust. And so the way to get it is to deliver what you’d want to buy if the circumstances were reversed.

Our business everyday is to make money for people. And I take it as seriously as doctors who are trying to cure cancer, because by giving people financial freedom, we allow them to do great things in their lives - from retire to send their kids to college, to buy their first house, to fund a business that they might want to start.

When I decided to sell my company, I already had enough. I live simply. I don’t own a house, a car, or even a TV. The less I own, the happier I am. The lack of stuff gives me the priceless freedom to live anywhere anytime. So I didn’t need or even want the money from the sale of the company. I just wanted to make sure I had enough for a simple comfortable life. The rest should go to music education, since that’s what made such a difference in my life.

So I decided I was going to invest my time. I spent Monday through Thursday at Frito-Lay, commuting from New York to Texas. Then Friday, Saturday and Sunday, I did my regular job in New York. It was an incredible commitment of time but it was an amazing developmental experience. It was challenging, broadening, and helped me reach the position I have today.

But from day one, I really wanted to build the kind of company my father never got a chance to work for. A company that honors and respects the dignity of work and the dignity of all men and all women. And that is why we became the first company in all of America to provide comprehensive health insurance 30 years ahead of the affordable care act, as well as ownership in the form of stock options for all of our employees, including part-time people because it is my firm belief that success in business and in life is best when it's shared.

I never wanted to be a businessman. I started as a craftsman, making climbing gear for my friends and myself, then got into apparel. As we began to witness the extent of global warming and ecological destruction, and our own contribution to it, Patagonia committed to using our company to change the way business was done. If we could do the right thing while making enough to pay the bills, we could influence customers and other businesses, and maybe change the system along the way.