At one point, I recognized that Warren Buffett, though he had every advantage in learning from Ben Graham, did not copy Ben Graham but, rather, set out on his own path and ran money his way, by his own rules... I also immediately internalized the idea that no school could teach someone how to be a great investor.

I seek individual investments that will allow me to target total portfolio returns of at least 20% annually after fees and expenses on an annual basis over a period of years, not months.

Government policies and regulations in the postcrisis era have aided the hollowing-out of middle America far more than anything the private sector has done. These changes even expanded the wealth gap by making asset owners richer at the expense of renters.

I had begun to worry about the housing market back in 2003, when lenders first resurrected interest-only mortgages, loosening their credit standards to generate a greater volume of loans. Throughout 2004, I had watched as these mortgages were offered to more and more subprime borrowers - those with the weakest credit.

Human-induced climate change is a scientific reality, and its effective control is a moral imperative for humanity.

My most amazing discovery was becoming a mother. It changed everything. I can't imagine my life without these little beings.

One of the things that I love to do is travel around the world and look at archaeological sites. Because archaeology gives us an opportunity to study past civilizations, and see where they succeeded and where they failed. Use science to, you know, work backwards and say, 'Well, really, what were they thinking?'

Science does not just drive space travel - space travel also drives science.