Competition is often heralded as a motivating force that drives innovation. But taken to the extreme, competition can be a barrier to success.

That's the philosophy of Peter Thiel, the billionaire entrepreneur and investor who co-founded PayPal and Palantir Technologies. He made a very early investment in Facebook and now is a partner in the leading venture capital firm, Founders Fund.

Before becoming an entrepreneur, Thiel went to Stanford for his bachelor's and law degree.